The amount of time it takes to remove the password protection from the PDF file depends on the size of the file. For smaller files, the site should upload and decrypt the file in a minute or two.

Highlight the PDF file, then click the "OK" button to import the signature PDF and return to the Configure Signature Appearance window. An image of your signature appears in the Appearance block.

There are two simple ways to remove the password from a PDF file, one of which works no matter what software you have.