Firefox presenting wrong google account

I’m trying to log into my main Google account’s i.e. calendar, email or contacts. I’m currently logged into my main google account’s email and contacts in another 2 tabs. BUT when I try and open up new tabs and open any one of email, calendar or even contacts it tries to open them up using the new Google account I created today AND it does not offer me any options regarding the other Google accounts I have or currently am logged in, in another tab. It’s like it’s almost forgotten them and all it sees is this new Google account!! When

This is ridiculous what is the logic behind this? It’s confusing and frustrating.