I have several AI pics going back 2 months and now all of a sudden they are not being accepted. It

The girl's toes are also messed up. This will be rejected based on technical issues. If you've already resubmitted it, I would suggest deleting and repairing the issues before you upload again.

I am also being asked for a model release of a sketch that was AI Generated and clearly marked AI Generated. 

By @FernL

You should read the requirements before submitting. Generative AI can be depicted after living individuals: model release is needed, or after fictional people: property release or the new flag, certifying that the people are fictional is needed:

That is well documented in the requirements for submitting generative AI assets.

In addition, looking at your asset, I found several errors, that constitute technical issues:

Artefacts.

Geometry errors.

Hand needs to be corrected.

Those were easy to spot issues in your file. A moderator would need a second to select the refusal reason for the first they see.

That is not a signature.  I used GIMP to erase a ton of stuff to make it neater and more symmetrical.  It is a scribble.  But thanks for pointing that out.  I can certainly see how one might perceive that as a signature.   The reason for the model release was one of the boxes was not checked off.  I check and double check and I still miss these boxes from time to time.  This one totally falls on me.  I checked the appropriate box and hopefully it fixes the issue

What was the exact refusal reason? Do not paraphrase. Copy/paste the header of the refusal.

This asset may have got refused for being “Non-compliant” as you see here a structure that I would interpret as a signature.