API login failed due to SSL certificate invalid UBR-LTE

Hi everyone!

Recently, I have been seeing some issues with my routers when I try to log in using the API. Error says:

[ERROR][ROUTER][REQUEST]: Data of UBR-LTE router not retrieved because <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: IP address mismatch, certificate is not valid for '192.168.50.1'. (_ssl.c:1007)> URL: http://192.168.50.1/api/login

Initially, one way we had to solve it was to update the firmware to 8.3.0, but this seems not working anymore. Also, it is not happening on all the routers, only on some. Why is that?

Thanks in advance!