Having issues with Adobe Acrobat.

If you have not already, update Sonoma to 14.7.4 and see if that reconciles with the changes that Adobe has incorporated within the current Acrobat. Failing a miraculous fix, I would recommend contacting Adobe Support for assistance with Adobe Acrobat as it is their product.

It is unusual for PDFs that open in Preview, not to open in a current version of Adobe Acrobat.

Adobe Acrobat Pro (subscription) or the free Adobe Acrobat Reader?

I have several PDFs here from all manner of PDF creation software and randomly, they all open and display correctly in Acrobat Reader 2025.001.20432. Still, I reiterate that you should contact Adobe about this…

Since you mentioned that only some files are problematic, consider testing with different PDFs, especially those that previously worked. This can help you identify if the issue is specific to certain files or settings.

I believe the next step is contacting Verizon and asking them why their auto-generated PDFs are different for your two accounts, and why one is not compatible with the current version of Acrobat Reader. Either they know about this because other customers have contacted them, or yours will be a revelation they should quickly act upon.

How deep do you want to descend into this particular rabbit hole?

You could run a PDF validation / verification tool, for instance.

That’ll provide a hint around where the bug lurks; in Adobe, or in whatever tooling generated these PDF files.

https://helpx.adobe.com/acrobat/using/analyzing-documents-preflight-tool-acrobat.html

https://verapdf.org/software/