New error Signing PDFs using VBA in Excel

This is more of a question for the developers of Adobe, but I had my macro running smoothly to open and sign a PDF and close it, but back in October or November something changed with the new update of Adobe, and now my macro doesn't work.  Does anyone have any insight as to why that would be?  Everything I can find online is older than the update, so clearly won't address my issue as my macro was working before then.