Sign in problem, Pocket account inaccessible

I have been a Firefox and Pocket user for years and have enjoyed being able to simply save articles from the internet to my Pocket account. Recently when I tried to save an article to Pocket I was taken to a page that asked for my Firefox credentials even though I was already logged in. When I entered my login credentials I was asked for a code from the authentication app I use but Firefox wasn't available on any of them and I don't have access to the codes I must have received when i set up two factor authorization. So, I created a new account to log info Firefox and assumed that my Pocket Credentials could be used to then sign into Pocket. I was wrong.

I can log into Pocket using my Pocket credentials but I am unable to save articles from ANY browser to my old Pocket account because I can't log into my old Firefox account. This is beyond frustrating. I hope someone can help.