Had to reinstall my OS and Adobe Acrobat Reader. Now my digital signature doesn't work.

Hi @Robert2769512272sk 

Sorry for the delay in response.

The description shows that your Digital Signatures have been missing since you reinstalled Acrobat Reader. Is that right?

If you still see the blank box, then right-click on it and see if you have the option to Clear the signature or Validate Digital Signature. Does it load the content?

If that doesn't work, then,

1- Please ensure you are signed in to the Acrobat Reader. Else your signature won't sync.

2- Open Reader>Help>Chcek for an update 

More information about this release is here: Release Notes | Adobe Acrobat, Reader 

2-

Navigate to Adobe Acrobat Reader>Preferences>Security (Enhanced)>disable and "Enhanced Security">OK>close and reopen Acrobat Reader and check back.

Note: these changes are only for testing purposes. Once tested, please change it back to the previous setting. 

3- Create a New digital signature. Sign the document and see if those are visible or not. https://helpx.adobe.com/acrobat/using/certificate-based-signatures.html 

Hope this helps.

Thanks,

Akanchha