Stops Working when Signing Documents using Certificate

I have to preface this with the fact that I hate all of the updates that Adobe has done. It is so buggy and unnecessarily difficult to edit documents. That said, my question is in regard to digitally signing documents using the certificate feature. As usual, the "Using your mouse, click and drag to draw..." dialog box opens, I click the "Do not show this message again". Then, after 3 or 4 times that I use this feature,  on different documents, the ability to embed my digital signature locks up. I try with my mouse to draw the box, but it stops allowing me to sign the documents. I have to uninstall and the re-install the app, set up my signature (image), again. This is the only fix to get it to work again. Why is it doing this and how do I get it to work every time without having to go through this exercise?