I had to submit my 2019 taxes manually due to special tax situation. I went to irs.gov to search my but I do not have any refund amount - how do know if IRS received it?

I went to IRS website: https://sa.www4.irs.gov/irfof/lang/en/irfofgetstatus.jsp
It does not accept a blank or 0 or 0.00 Refund Amount