2020 Tax returns

I received a email from IDnotify stating that my tax return had not been signed.  So, I signed it and returned.  This happened in early February.  I have been waiting since then for my return.  Been going into IRS refund which keeps telling me it's in process.  How can I be sure when I received the February text that this wasn't a scam and that they are still being held up by IRS.

 

Thank you