That's what I did. Sorry, I got the lingo wrong.

I have setup my first RLC-520a, activated push notifications and setup the other motion/recording options. One area is masked off to ignore motion but I'm getting notifications and the camera is recording people walking in the area that I've masked.

I have the app working pretty good on my firestic. I actually had to download an android app called apps to fire.(see link below) Once I configures the Reolink app on the firestick the display was compressed. so next I downloaded an app called set Orientation, it orients the screen automatically for any app on my fire stick. Yo will need a key board to configure the reolink app. There are plenty of youtube vidoes on how to install and use these apps.

App to Fire Android Link
https://play.google.com/store/apps/details?id=mobi.koni.appstofiretv&hl=en
App to FireApple Link
https://itunes.apple.com/us/app/cetusplay/id1219898700

Set Orientation Link
https://play.google.com/store/apps/details?id=com.loyalar.rotationcontroller

I mostly followed this guide except I ended up using a USB OTG cable to add a physical keyboard/mouse to control my Fire TV in order to add 2nd/3rd/etc cameras to the Reolink app. Now I'm pleased that the app loads into my 2x2 camera view by default. Definitely need a native Fire TV Reolink app.

I mean, after installing the app, I login with my Reolink account but then I still have to enter each camera's password (at least once). On some smart devices it's a real pita using a remote control with an onscreen keyboard.

I expected the camera passwords to be automatically entered when I log into my Reolink account in the mobile app. Unless I missed something, every time I setup the app, I have to enter the password for all my cameras.