Only the IRS can answer why your refund status hasn't yet been approved. Typically, you wouldn't receive a letter regarding an offset until after your refund has been issued.
There are several possibilities explaining why your refund is delayed. The TurboTax FAQ below helps explain some of them. If you still need information, you can contact the IRS by phone at 1-800-829-1040.
"Why do some refunds take longer than others?"
https://ttlc.intuit.com/replies/3302330
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
