Thank you for your timely reply. I do need a further help! My case is not normal. So normal procedure to follow up didn't work.
Here is my case:
On April 4, 2020, efiled and got 'accepted' email.
On Sept 2, 2020, received a letter from IRS asking for form 8962 and 1095-A.
On Sept 3, 2020, mailed the requested forms.
For a few times in Nov and Dec 2020, checked the status with SSN and the exact refund number, got 'Still in process'.
On Dec 7, 2020, mailed a letter to IRS seeking for an answer.
No mail response so far and 'no status available' when checked the status in Jan, 2021.
On Mar 8, 2021 today, checked the status with the same numbers, got 'You may not have entered your information correctly'. It goes in a dead loop.
What's wrong? How to bring this to IRS someone who can look into my file and find out?
