I played a trial on PC but purchase on Xbox, then my friend cannot invite me??

Before FC24 officially lauched, my friend and I were both given 10 hours trial on FC24 from our EA play membership, he bought membership, but mine was from my "Xbox Game Pass", so we both entered this game on PC at the first place, but finally I decided to buy the game on Xbox instead of PC, my EA accout is the same one, and it is always connected with my Xbox account.

Here is the problem, I can send invite to my friend anytime, but he can't find me properly online, because there are bugs on his side, that he can only see my PC account for the most of time, my PC is offline, so I am always offline on his side though I am actually Xbox online. the only solution so far is he has to delete me first and then re-add me then he can properly send me a invite for once, but then my acccount becomes PC again....