I got myself access to a different pc (in a different house) and it worked fine. so it most be something with my pc or network.
Edit: i have also gotten acces to a 2nd pc in my own house and the chat works so it must have something to do with my own pc.
hope this info helps
you probably already knew this, but i just tested some things with a friend and i cant interact at all with him. Trade, group up, add as a friend, etc.
I don't know if this info helps in any way. but i thought that I better share it.
it is up-to-date . i'll retry all previous suggested posibilities and inform if i do find a fix.
If you think of anything i will be happy to try, and i thank you for your help and time.
PS: could a fix be that i remove my character and start fresh?
if i recall correctly the first time i played the chat did work this was around the 2nd of juli 2019
i stopped playing for a while and now since a few days i have started playing again