I checked my 2016 return and confirmed that my CPA failed to file the 5405 and just entered the annual $500 payment on line 60b.I will definitely follow up with...

My federal return was rejected because the e-file database indicated a First Time Homebuyer Installment Payment was due for my SSN.

Yes I probably do, but I filed 2016 with a CPA so I'm not sure what the process would be for that. Thanks!