I have filed amended returns for the same year twice at this point, per the turbotax instructions. Is anyone else having this issue?

I have followed all of the TurboTax instructions, and have filed twice, waiting over eight weeks each time.  The federal government, via the amended return website tracker, has not received either one.  Are the instructions for TurboTax incorrect?  Is anyone else having this issue?  (The amended return is for 2018, and includes the update for mortgage interest)