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Hope you are doing well and sorry to hear that.
Would you mind sharing the screenshot of the error message for a better understanding? Also, please log out of the application, reboot the computer once, and re-loging with the same Adobe ID and check if that helps.
Also, make sure you have the recent version 22.1.20085 installed. Go to help >check for updates, you may also download the patch manually from the link https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/index.html and reboot the computer once.