A33. No. If you have already filed your 2020 tax return and reported excess APTC or made an excess APTC repayment, you do not need to file an amended tax return or contact the IRS. The IRS will reduce the excess APTC repayment amount to zero with no further action needed by you. The IRS will refund the excess APTC repayment amount you paid on your 2020 tax return and you’ll get a letter from the IRS explaining the changes we made.
There is no need to contact the IRS about this issue. This effort to issue refunds to those who paid an excess APTC repayment amount on their 2020 return is ongoing and will continue.
So it appears that the IRS knows your return needs to be assessed, but so far they have not verified anything ($-0-) is the way I'd interpet what you posted. The question is why haven't they haven't processed this yet, as it would appear rather easy, made the refund????? (other than they remain quite backlogged and may not have the manpower to deck against the effort)