Hello @Oliver Lietz
Thanks for reaching out to us, I can understand your pain, however, we are not supporting Skype consumer here. I have a few suggestions which may help.
First, there is a forum which provide support for Skype on below forum, there are experts for Skype -
Then, there are a few ways to contact online Skype support -
https://support.microsoft.com/en-us/skype/contact-skype-support-6d59f7ba-ba27-475d-87d0-5d36c2fcc59e
If none of above working, I am happy to enable you a free support ticket to contact support team with bot service, experts with Skype knowledge can help you.
Please let me know, I hope this helps!
Regards,
Yutong
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.