After setting up an Edge Router X and everything fine, out of the sudden the browser started not to show any stats.
In Firefox console a message was saying “Cannot establish connection to wss://ip-of-router” leading me to disable the antivirus ( Bitdefender this case ).
All started to work again.
If you have time and heart for it you can try to paly with it until you get it to work. As i don’t like intrusive software and i don’t have so much time, my personal quick solution was uninstall.