Returning player unable to log into Web Store

I have an on-going conversation with in game support which is proving futile.

I cannot link my account to the web store - I receive a verification code but it takes me back to the connect in game screen.  I am connected in game, whenever I attempt to  un-Iink I receive and error message (9.0) and it tells me to contact support.  

It would be great if I could log in, spend there and get the Relic 10 calendar that I am currently unable to receive.  

I am not sure if it because I originally started playing on Apple, and now play on Android.  Is there anything I can do?

Ally code - 593853316

I have checked and followed this, but it doesn't help - https://forums.ea.com/discussions/swgoh-technical-issues-en/re-swgoh-webstore-errors-guide/10712407#M12258