SSL for pro site with Claudflare SSL

I fill so stupid after whole day reading all articles and using life support I still could not manage to fix this site. I know that when I create first multisite for a client that all worked fine with no problems but here some month later I can't figure it out what is the problem. When I test the SSL I get that SSL is for SNI and domain and wildcard domain but when I try it on a subsite created for test ( I get that SSL is not OK. Any sugestion would be welcome. Thank you