After HP OfficeJet 8600Pro Update, eprint address is now wrong

[ASBinJax]

OfficeJet 8600 Pro previously working fine, including eprint email address.  Printer automatically downloaded and installed update today. Printer still works as OfficeJet, however, eprint address now shows a different address not requested by me. It does not print with my address, but does print with unrequested address.  How can I remove unwanted address and reinstall mine, or a new one I select? 

[ASBinJax · Accepted solution]

After extensive reading, found that Webservices had been reset.

Followed instructions to ADD the printer to HP Smart using the 'Claim Code' from the printer Info page in Settings.

After multiple attempts and seeing 'invalid number', I added a space in front of the character set provided and it accepted it. This made 11 characters instead of 10, but it worked and it now shows my printer.

One of the fields in the online form in HP Smart shows that you can change the HP eprint email address, previously set to what is in the 'claim code'.  In a separate thread, I read that you cant use a previous eprint address for six months, so when it said my address was already in use, I added the letter 'a' to the first field and it went thru.

No further assistance required, printer is functioning well again.