Can't log in to game account on iPad

Good morning,

I'm playing Boom Beach on my Ipad and tried to login on my Iphone but receive the following message:

• your game account was not found (see enclosed image).

It seems like it doesn't recoqnise my game ID as I enter the 6-digit code which I received

Could you help me so I can login also on my Iphone.

Thanks in advance,

Peter den Braber

[Edited by Moderator]