On my original tax return I filed I had no issues with the Employer EIN on the return, but on my amended one it’s saying the same EIN is incorrect?! Help!

I am amending my return to add a w2, but cannot for the life of me figure out the first w2 I had on my accepted return, is now saying the EIN is incorrect. The reason I’m amending it is to add a W2 and get more money back:  has someone else dealt with this? Please help!