Issues after Cross Progression is activated on your account? Check here first!

Uhh.....I just received the cross progression but here's the thing MY main account is on my nintendo and just now during this message I received the cross progression on my ps4 but went forward to press X It was loading but then it said go to EA.com/unable-to-connect which now I don't know if I have to Link my EA Account to the PS4 or Do I have to wait for cross progression on my nintendo....( p.s I haven't lost my Skins or Cosmetics ) and I don't have anything else linked but the nintendo.....so should I like link it Since I already received it on the ps4 or should I just wait again