We apologize for the inconvenience caused, as per the description above, you are getting "No internet connection error" while converting a PDF, is that correct?
The record shows that you are subscribed to Adobe ExportPDF service on your current Adobe ID, try exporting the PDF through the URL https://cloud.acrobat.com/exportpdf with your Adobe ID and password on a browser like Chrome, or Firefox, or Safari and see if this brings any difference.
If you are using the freeware Adobe Reader DC and getting the error message, please sign out and sign back in Adobe Reader with your current Adobe ID and password, and check for any pending updates from help>check for updates, reboot the machine after installing the updates and try converting the PDF file.
You can also refer and try the suggestions from the following KB article for "No internet connectivity issue" Resolve connection errors with Adobe Creative Cloud and Creative Suite applications
Let us know how it goes and share your findings.
We often face "No internet connection" error which is a very common error. A facebook friend of mine suggested me a very simple way out. Here it is. Firstly we have to reboot our PC's , modem router, now the next step is to run the windows network troubleshooter. After checking IP settings and trying a few command prompt commands, We will update our wireless drivers and reset the network.
Hope you are doing good. That's a very well thought of sharing your findings and helping others.
We appreciate you took out time for that. Your troubleshooting steps performed may would help others who get to experience the same issue often.