2 strange things are going on here. The “all forms” PDF you created should have the payment vouchers. And the failure to save any new PDFs.
You can download a 1040-V from the IRS site and fill it in by hand. Virtually every IRS form is available online. You didn’t specify your state, but hopefully they provide the same service.
https://www.irs.gov/pub/irs-pdf/f1040v.pdf
