Does someone use a wildcard or san certificate for collabora and nextloud

I still have ma WOPI-Host problem. My set up works if I use my self signed certs, but if I use my Comodo Certs I get a WOPI-Host problem.
In order to localize the reason: does someone use wildcard certs or san certs for collabora. And if so, does it work.

Kind regards, Roland