Even though my number is NOT on the list of blocked callers, Facetime "thinks" I am a blocked contact

Whenever I want to place a Facetime call to my daughter (we have a group chat consisting out of her phone number, my iPhone number as well as my iPad number), Facetime tells me that I am trying to Facetime with a blocked contact. I checked the blocked contacts-list for a) my daughter's number, b) my iPhone number, and c) my iPad number, but none of these are on the list!

However, if my daughter initiates the Facetime call, then we are able to Facetime.

I also don't have any issue Facetiming my daughter from my iPad.

Any ideas of what is going on and how to fix it? I'd be so grateful as this is driving me bonkers!