Reolink Trackmix FTP Error 450: Unknown error. Please try again.

Anton

I'm unable to get FTP working with Reolink Trackmix POE. The FTP server is being hosted by my Synology device in a remote location.
Everytime I test the FTP settings I receive the following error: 450: Unknown error. Please try again.
FTP access works using the same account from my PC using Filezilla.
When I log into the Synology and check the Reolink folder I created, I notice that the Trackmix has communicated with the FTP server leaving 0byte files.

UPDATE:
I'm posting an update since since my post has been flagged as "new user" preventing from replying to the thread:

@joseph_1979

I receive the following continuous logs:
user [reolink] from [x.x.x.x] logged in successfully via [FTP]
logged out the server via [FTP] with totally [0 bytes] uploaded and [0 bytes] downloaded

None of my other cameras from Hikvision, Annke and other brands have this problem.
I have tried other ftp accounts & admin account and still the same problem.

@joseph_1979

I've installed the software but I'm not sure how to use Wireshark. What do I enter in the settings?

@joseph_1979

Reolink support have finally solved the issue for me. FTPS needs to be disabled in the Synology.