Well, I also been using freiexchange for years and never had any issue.
I'm actually in touch with one of the members on discord and he's always available to help and fix issues.
Maybe you can contact him (fedde) on discord or other means.
And how can I contact him? I immediately apologize for my English. On helpdesk.freiexchange.com I created a ticket #224468 but it didn't do anything.