Not being able to buy nothing

I love this game i play it everyday!... But not being able to buy anything from the bank store is making me like it less... Like id say you guys want my money so why wont you let us buy nothing every time i try it says the item was already bought before and is void or something pretty stupid.... Please fix as soon as possible

The pie god 123 about Vikings: War of Clans, v1.6.0