@Y2kjkj
Yes, they should be linked. But you still need to wait for the "cross progression" prompt. It's a very delicate thing.
From what, i've heard the currency bug it seems to be an issue when you do the unlink & relink things but I never experienced it myself as my apex PC account is "new"
https://help.ea.com/en/help/account/unlink-gaming-accounts-from-ea-account/
If anything goes wrong, or the bug doesn't go away try to always contact EA support, they might be able to assist you better than I will. But they'll say most likely that you should revert the unlink process and just start anew so the currency bug doesn't happen.