ios17 dvantcolled.club certificate not trusted

It has nothing to do with iOS 17. As you marked my answer Best Answer I assumed you had resolved the problem.

You most likely got tricked into installing a rogue calendar; your phone does not have a virus. In the future beware of "free" offers

See this Apple support link→Delete spam calendars and events on iPhone - Apple Support

or watch this companion video:

Is that a certificate that you know and use, or did you get tricked into installing a scam app or calendar?

With iOS 17.00.0 upgrade I have the certificate error dvantcolled.com Not Trusted, still exists after the 17.00.3 update last night. How do I resolve this error?