Since version 122 there is a problem with installing the Szafir SDK Web extension. It is necessary to be able to submit signatures online. After installing version 121, I was able to add the extension. After updating Firefox to version 130, the Szafir SDK Web extension still works, wich is good. The problem is that not everyone will handle it this way. I tried adding the extension manually, but the same message is always returned. "The add-on cannot be installed because it appears corrupted." Is there any solution to this problem?