wrong steam account accidentally linked to EA account

Thank you for your reply...

Another attempt has been made, but it seems I'll have to wait at least six months  (After that they will be able to disconnect my daughter, but I really hope they can reconnect my first Steam account (because I saw a message about a one-year waiting period in the quick login section of the Steam window)).

I don't dare create a new EA account to link it to my original Steam account (to play other EA games like FC26). I'm afraid of the consequences, because ideally, the link between the original Steam account and the EA account absolutely needs to be re-established.

The problem seems to stem from the fact that after realizing my daughter was linked to my EA account, I tried to disconnect her myself (but then couldn't reconnect my original  Steam account so ...and after that my my daughter's account has reappeared.).

The fundamental problem in my case is that the inability to share certain games on Steam Family isn't emphasized enough, in my opinion. If this sharing were possible, my EA account could stay where it is.
Juste in case, my case number is 245457912

Hi, sorry to hear you’re dealing with this. You did take the right step by contacting our advisors. If they’ve told you they can’t assist further, then I’m afraid you may need to wait before trying again.

If you’d like, you could go back to support and ask them to confirm exactly what options remain available in your case. Unfortunately, we can’t review or change account details from the forums.