Acrobat Pro Multiple Issues

Hopefully someone here is far more intelligent than I am. I have a liscenced version of the lates 23.08. Acrobat Pro on a super powerful M3 Mac with an obscene ampount of RAM. Word Documents (multiple) are being SavedAs  PDFs  and then created as a fillable forms (same issues on 10+ forms) requiring signatures.

1.) Fields disappear for the signer that are clearly shown when I preview before sending.

2.) The designated fileds for Sender, Signer, Anyone change for no good reason.

3.) Fields turn to locked without me doing anything. ( Is this because they are set to Signer?)

4.) Verifying forms crashes my system and I have to Force Quit and restart.

5.) I am unable to find any instruction on WHEN and HOW I sign my own form before sending fo e-signature. FIll & Sign seems obvious: My signature appears, but apparently not in the field for Sender - which means it doesn't get a stamp. Do I need to emil it to myself to sign?!

I have made dozens of very complex forms over the years, and this new interface seems far less intuitive than it was just a couple of years ago. 3 days have been burnt, and about 30 tests (again, on multiple files) of trying to figure this out on my own with you tube, forums searches, etc. HELP, PLEASE?!  

Many thanks,