State tax filing

Oh I read your top question again.  You only got 2 forms for 2019 estimates?  Which ones?  What tax due was on them?    Did you maybe say to apply a 2018 refund to the first estimated payment?  Or if you filed after April 15 you might have said you already made the first payment?  Do you still have the pdf of 2018 return?  See if all 3 ES slips are there.