Pending E-File Status

I e-filed my Federal Tax Return on January 14th and it still says pending. The IRS app and Where's My Refund sites say I'm entering incorrect info or info doesn't match or there's no info available or PENDING. When I call the IRS automated line it asks if I e-filed before January 22nd and then says there it's no info available.  Why hasn't my return been accepted yet?