Sorry Guest, you are banned from using this forum! (Chrome only?!)

[Egi]

Hello together,

I have the problem with sc4devotion that every time I try to use the forum in google chrome I get the following error message:

AN ERROR HAS OCCURRED!
Sorry Guest, you are banned from using this forum!
Spammers are not welcome here.
This ban is not set to expire.

This is not happening in Firefox.
No "privacy addons" are installed in both browsers.
LEX works fine on both browsers.