You have an account from 2016, you recently woke up and changed your password, is this account yours? If so, I don't know where you've been for nine years, but things happen; maybe it's time to update your browser or at least clear your cookies. What's bothering you was bothering users back in a time you joined the forum. A lot has changed while you were asleep.
https://bitcointalk.org/index.php?topic=1092878.0Yes this is account is mine. I made this years ago without the intention of posting but just reading in the forum. There was a forum site before that is similar to bitcontalk.org that I was using and someone recommended this site for me.
I made another account just a few days ago and remembered I have already made an account before. So I decided to try and recover it since I still have the email that I used. From what I know there is no rules that indicates I can't have multiple accounts.
Did you successfully recovered your account? As post above indicate that usually it won't happen unless you stay on page for too long. I stay in this thread for too long and when I tried to quote the above and that's what actually display (same as yours) and after refreshing the page solved the problem. Anyway, if you did recover your old account then try posting to the same thread and using the same device (I was thinking that it may have been the browser you have used). Why don't you try provide the link of the thread itself to see if we could also face same problem as yours.