I have the same problem. After installing the new paid service Acrobat Pro instead of Acrobat. After clicking the "Sign" button, nothing happens, the button is inactive. I did everything recommended here: uninstall Acrobat Pro, restart, install. unchanged. Next- Uninstall using Acro cleaner https://www.adobe.com/devnet-docs/acrobatetk/tools/Labs/cleaner.html. restarted my computer and installed using https://helpx.adobe.com/acrobat/kb/acrobat-dc-downloads.html (Windows 10). Still the same problem. Here is the video. To be sure, the signed file was created by me directly in Acrobat, but the same problem occurs with any unlocked document. In the cloud version - the same problem. In the version for the Chrome browser, the selection of the certificate signing service is completely missing (screen attached).https://acrobat.adobe.com/link/home/ In the iPhone version, the selection of the certificate signing service is completely missing (screen attached). I've already wasted 10 hours of my life trying to fix it and another hour mailing signed hard copies. LInk to video: https://vimeo.com/930423893/386aa54937?share=copy Link to video diagnostics ID: c5e4ac5f-817c-43cd-a840-2750ab1bbe0b Link to log collector Log collector link
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