thanks everybody for the replies, after setting 2020 AGI to zero, viola return accepted!!!!, IRS can be so strange at times. I'm still not sure what the pin thing is but since the return is accepted I will forget about it for now, but for sure remember the made up number I submitted for the pin when filing in case it comes back to bite some time in the future.
I remember trying to register with IRS for something, I think to do with one of the stimulus payments, I was not found. I knew I had the info right, turns out my name had to be in all caps. I was in IT for 25 years and that type of mismatch in 2021 should never be, its like requiring a new user name to be all caps to register for something.
