My brother never played much and was still relatively low level but now we've tried to play together and we can't join the same lobby. When we looked at what legends he owned it was all the exact sam...
Ideas
When was the last time you played and when did you see this start happening?
Can you check on this page if there actually are 2 PSN accounts connected to the same EA account: https://myaccount.ea.com/am/ui/connected-accounts
I've just found my EA account and it says no PSN accounts are linked. I've been playing recently but my brother hasn't played for a couple years. It's only now we've tried to play together that we noticed he's taken my data.