no idea what previous account was

Hi I am using regular minecraft on playstation 4, just regular minecraft.  When I try to log into my microsoft account so my son can play with his friends it says: OOPS!  LOOKS LIKE THIS ACCOUNT IS ALREADY CONNECTED.  PLEASE SIGN IN WITH YOUR PREVIOUSLY CONNECTED MICROSOFT ACCOUNT.  HTTPS://AKA.MS/MCPSNHELP

 

There is no reference to WHAT the previously connected account was.  What prior account did I use or where does it tell me what microsoft account I am supposed to be using?  I am not aware of any other microsoft accounts, so I can't fix this.  on playstation 4 it says our profile is 'drdavis9'.  when i go under micosoft i see LindD45 as an xbox profile, but that is under the same microsoft account I am trying to connect with right now.

 

WHAT IS THE 'PREVIOUSLY CONNECTED MICROSOFT ACCOUNT'?  WHERE DO I FIND THAT?

 

This is just regular plain old minecraft on ps4