I raised my grave yard to 22 using flowers and the inside of the church to 17 with candilabra.. NOw i can not hold a service on the designated dtried two weekss but it says "Serv ice ailable next *". I

The same happened to me a while ago - restarting the game fixed the problem.

Otherwise, check if you have necessary papers - if you talked with the bishop about upgrading your church, he should mention that you need Citizen Papers to perform masses now (in the same vein you'll need Aristocrat Papers later in game, when upgrading to Cathedral). You can buy them at the box next to the entrance of your church (the one with little crown on it)

No go... The developers really need to fix this game.

Same here, worked once to just restart the game, but than this got persistent. The Bishop is there but I can't hold a sermon. Also on other days the respective NPCs don't appear.

I also run into this bug already twice today. According to Steam talks this should go away once you play a full week. Did not try this yet.

Still should be already tangled by the devs. There are a lot other things which need fixing.

GoG Support recommended to downgrade to 1.120 for now. I reached support both via developer and publisher, but got no response until now. I really hope they fix this in near future.

I got a first response from tinybuild:

Thank you for the info. Cheers