Home assistant app & Firefox do not connect. Chrome and Brave do work

Since a couple of days I am no longer able to connect to my local home assistant setup through internet. I have setup ha via docker and traefik. When I am on the same network the app works fine. When I want to connect through the internet it does not work anymore. This also happens when I try to connect via Firefox, if I connect via brave or chrome browser the connection is fine.

I cannot find relevant errors in the homeassistant log.

Check the companion app logs for the actual failure