Does it say the return has been received?  My client got the message that they were working on it and to call if he did not hear anything further after 14 weeks.  He called after 14 weeks and a nasty IRS clerk told him it hadn't been 14 weeks, and there was nothing she could do about it.  He called back a month later, I haven't heard the outcome of that call.  (The issue is IRS error in processing a solar credit carryover.)  If the IRS website doesn't say they have the return, I think it's "lost in mail" time to start over.