Game center

Hi I'm peiman

i have a problem with login to these two games -coc and clash royale- on Game Center.

the message appeared "login failed,please try again later " as i'm using the other supercell game Boom Beach ,it works fine on both of my iPad and iPhone.

i wonder how it's possible ,first I contacted to supercell supporters "unfortunately Supercell cannot check or restrict access to accounts" they wrote.
how could you help me to get rid of it? please help me!!

Thanks