When I sign a document and want to save it, it prompts me to "save a copy". when I click "save a copy" nothing happens. It will not let me save a copy of a signed pdf? It was working 2 weeks ago now it won't. I tried unchecking "show online storage when saving files" and unchecking "enable protected mode at startup". I've also tried uninstalling than installing adobe, that didn't work either.