I have already followed all of the instructions in that FAQ and do not have more than one account. I put a screen shot showing everything is checked as "no".
It does appear that everything has been set to NO - so everything correct there.
However,
and do not have more than one account.
Are you 100% certain? The reason that I ask is that is the #1 cause for e-mail notifications to still arrive, when they have turned off e-mail notifications. Over the years, I have ended up with a couple of Adobe I.D.'s, and had to get Adobe to manually get rid of most of those, in a rather long, involved telephone call.
Often, a user will immediately create an Adobe I.D., which will be their Forum log-in, then not use it for some years, forget about it, then create a new one, when they have an issue. Once, the e-mail notifications defaulted to NO (form was different back then), but with a Jive update, that default went to Yes, and everyone with an Adobe Forum log-in account had to go in, and reset those e-mail notification settings manually - all over again.
We are blessed here, with Adobe-Admin (John C.), who can look at a user's I.D. and determine if they DO have more than one Forum log-in account. Maybe John C can check out your account(s), and shed some light on what is happening in your case. One thing that I would do in the meantime, is check those e-mail notifications - the ones that are still coming in - to determine which of your POP accounts, they are coming in from. Maybe a long-forgotten account?