**SORRY ABOUT MY BAD ENGLISH FIRST**
1) If you recieve some strong card from other nice player, you may be permanently banned
2) If you lend or present some strong card or other thing to other player, you may be permanently banned.
3)If the player have trade a big amount things, of lend you large amount item/strong card is a hacker, although you never know he/she did such thing, you will be permanently banned
4)Although you haven't do any thing, and Silicon don't have any positive evidence, you still get permanently banned.
5) The only solution Silicon know is ban, they never think other way which is better, such as delete the card.
Moreover, I find Silicon have done something like this in the japanese ver. of this game too.
In the japanese ver., because Silicon want to stop a little bit of the player(1~10 people, may be) cheating, they make the game can only play by japanese and give up all oversea player, although they have put the game in the oversea apps store.
They haven't give any answer to the oversea player, also, some player point out that company can use some other way to reach the same result but will not implicate oversea players, however the company didn't use it.
I think I should not believe this company anymore
here is the evidence.
if the page ask you ID&PW, please use this.
*sorry about some of them are japanese, if you cannot read japanese please use google translate