After you file

my 2020 federal tax amendment was accepted on MAY/05/2021 but I didn't get my refund yet 

I was traying several times to track my refund with the IRS but when I turn in my information the the system said

that the wrong info and got to contact and check with my tax prepare

Please! can you let me know why this is happening o what I am suppose to do  Thank you

I will appreciate a proper answer and professional support 

                                                                                                                 THANK YOU  Again!