I could connect to Facebook via Pidgin just fine until one night, when Facebook sent me a message about suspicious account access.
I stupidly clicked "I don't recognize".
Ever since, I get some "not authorized" error-message when trying to log in to Facebook chat via Pidgin.
I checked if anything else might have caused the problem, but found nothing. So I assume Facebook blocked Pidgin indeed. Is there a way to circumvent this blockage?