This is the response I got from Reolink support. I've asked for an approximate ETA on the firmware update.

This is Iris from the Reolink Senior Support Team! Thanks for reaching out.
 
After the Doorbell camera is added to the Home Hub series, it does not have the Reolink Chime option so they cannot be paired for now. 
 
Please don't worry, we're working on new firmware for the Home Hub to support the Reolink Chime and it'll be available soon. Before that, here are two workarounds:
 
1. Delete the Doorbell camera from the Home Hub to use it as a separate device so that you can pair the Reolink Chime to it.
2. Or you can keep the Doorbell connected to the Home Hub, and use the Home Hub Ring function. After you press the Doorbell, the Hub will emit a loud tune like a chime.

@user_901203979997352_901203979997352
Response from Reolink:
Sorry for the trouble caused.
The new firmware for the Home Hub will be released next month. Please make sure to turn on the auto-update for your Home Hub so that it can be upgraded automatically when the new firmware is ready. Refer to How to Enable Auto Upgrade via Reolink App

@chopstix I think it must be on their list of improvements to make. It's such a fundamental thing. The motion detection component of the doorbell is the most advanced and costly component to the doorbell (and most promoted), but as it stands I have to turn off this functionality just because of a software deficiency. And it won't be that bigger deal to change this. They already have features of their products with multiple schedules so this really wouldn't be a big deal to cater for.

It would be great if a motion or IR detection on one camera can trigger other cameras in the same home hub or network to be activated as well.

@chopstix I think it must be on their list of improvements to make. It's such a fundamental thing. The motion detection component of the doorbell is the most advanced and costly component to the doorbell (and most promoted), but as it stands I have to turn off this functionality just because of a software deficiency. And it won't be that bigger deal to change this. They already have features of their products with multiple schedules so this really wouldn't be a big deal to cater for.

Separate schedules for Doorbell 'Ring' (press) and motion alarms for Home Hub .
And also separate schedules for Doorbell 'Ring' (press) and motion alarms for Doorbell push notifications. 

We need the ability to have doorbell (press) chimes & notifications 24 x 7 but the flexibility to restrict movement detection alarms & notifications to more restricted hours (like overnight).

Refer https://community.reolink.com/topic/15584/doorbell-wifi-battery-flaw for more details

@chopstix I already have a chime & yes I've updated the firmware that allows for Chime & Home hub co existence. This does not solve the problem that I've documented. The home Hub is downstairs & the chime is upstairs. The chime cannot be heard downstairs & the home hub cannot be heard upstairs. Based on Reolink's advertising material a home hub & chime should suffice which is why I bought them. But until separate schedules are added it does not suffice.

I bought a Doorbell battery in December & there is a fundamental flaw in it's operation. Reolink support don't appear to grasp the problem

The doorbell is promoted as being a doorbell that also monitors movement detection.
However the two go hand in hand and cannot be separated, which for me & many others renders the motion detection useless. 

The doorbell can chime the home hub when it's pressed. It can optionally also send an alarm to the home hub when movement is detected, but they both lie on the same schedule. You can't for example have the doorbell chime the home hub when the doorbell is pressed 24 hours by 7 days, but only have motion detection alarm set at night time.
Anybody that has a doorbell will want it to chime 24 by 7, but you don't necessarily want a movement detection alarm 24 by 7. For example we have children playing in the front near the door and someone doing the gardening in the same area during the day so we certainly don't want the movement detection alarm on during the day (It would go off non stop).
But since there's only one doorbell chime to homehub schedule I have no option but to turn off motion detection all together.  Quite ridiculous

The above applies to the Doorbell chime to home hub but it equally applies to Doorbell push notifications as well. Again, only on1 schedule covering both doorbell 'press' & doorbell movement notification. Which means I have no option but to not get ANY notifications (press or motion detection) during daylight hours.

All of this would be easily solved by having a separate schedule in Doorbell - Chime - 'home hub ring'. One schedule for 'Visitor ringtone' (press) and one schedule for 'Alarm ringtone' (motion detection).  
And in the same way by having a separate schedule in Doorbell - Push Notifications. One schedule for Visitor ring press & one schedule for movement detection.

Reolink support, when will this be fixed?

It would be great if a motion or IR detection on one camera can trigger other cameras in the same home hub or network to be activated as well.

@joseph_1979 On a related note, how can I set the home hub to chime ONLY when the doorbell is pressed & not when when motion is detected. in "Home Hub Ring" settings there is a 'visitor ringtone' & 'alarm ringtone'. I want to deactivate the 2nd (alarm ringtone) so the hub only rings when the doorbell is run, not motion.

@user_901203979997352_901203979997352
Ok finally got it working. For some reason my homehub chime schedule was disabled.

• First get the firmware update. The download link is in this forum (in my case they pushed it out to me so when I manually looked for updated firmware I got it).
• Setup your "Home hub chime" in Doorbell - settings - chime - home hub ring - switch on - choose settings (you've probably already done this step)
• Setup your "Chime" in Reolink home hub - + - add device - select reolink chime - choose settings
• Then link the doorbell to the chime in reolink home hub - smart linking - + - add trigger condition (choose doorbell) - add new action (choose chime) - set ringtone - confirm - create (top right)

@user_901203979997352_901203979997352 Ok just an update. I got the firmware update a few days ago & have only just got the chime working. But now the home hub has stopped chiming!!! I'm back waiting for a support response on that. Will keep this forum updated.

@user_901203979997352_901203979997352
Response from Reolink:
Sorry for the trouble caused.
The new firmware for the Home Hub will be released next month. Please make sure to turn on the auto-update for your Home Hub so that it can be upgraded automatically when the new firmware is ready. Refer to How to Enable Auto Upgrade via Reolink App

This is the response I got from Reolink support. I've asked for an approximate ETA on the firmware update.

This is Iris from the Reolink Senior Support Team! Thanks for reaching out.
 
After the Doorbell camera is added to the Home Hub series, it does not have the Reolink Chime option so they cannot be paired for now. 
 
Please don't worry, we're working on new firmware for the Home Hub to support the Reolink Chime and it'll be available soon. Before that, here are two workarounds:
 
1. Delete the Doorbell camera from the Home Hub to use it as a separate device so that you can pair the Reolink Chime to it.
2. Or you can keep the Doorbell connected to the Home Hub, and use the Home Hub Ring function. After you press the Doorbell, the Hub will emit a loud tune like a chime.