All the sudden irs says they have no info on my 2020 tax return says it was accepted in April any help would greatly be appreciated

The IRS has never been this far backed up so they don't have a use case for checking on your refund status after Dec 31st.
It seems that page is not functioning for 2020 tax returns.

When you file 2021 you will able to see that return's status.

Also see:

National Taxpayer Advocate delivers Annual Report to Congress; focuses on taxpayer impact of processing and refund delays | Internal Revenue Service (irs.gov)

Please reach out to the IRS by calling them directly:

 

IRS: 1-800-829-1040

The hours are 7:00 AM - 7:00PM local time Monday-Friday

 

When calling the IRS do NOT choose the first option re: "Refund", or it will send you to an automated phone line.
So after first choosing your language, then do NOT choose Option 1 (refund info). Choose option 2 for "personal income tax" instead.
Then press 1 for "form, tax history, or payment".
Then press 3 "for all other questions."
Then press 2 "for all other questions."
- When it asks you to enter your SSN or EIN to access your account information, don't enter anything.
- After it asks twice, you will get another menu.
Then press 2 for personal or individual tax questions.
It should then transfer you to an agent.

 

See this IRS website for local IRS offices - http://www.irs.gov/uac/Contact-Your-Local-IRS-Office-1 or call 1-844-545-5640 to set up an appointment

 

See this IRS website for Taxpayer Advocate in your area and a toll free number - http://www.irs.gov/Advocate/Local-Taxpayer-Advocate