I am not able to digitally sign or certify any documents

When I choose either option I can use my mouse and create the signature box, but once I do that, the screen goes opaque black and I can’t perform any more functions. I can CTRL+ALT+DEL and shut down Adobe or I can ESC and it takes me back to the open PDF.
I’ve shut down and restarted my machine, but to no avail.
The last document I was able to Certify was on 9/9/21 and my certification doesn’t expire until 12/20/2025, so I’m not sure what the problem is.
