it happen to me twice now. I bought both Anbu and Hokage supports for ninetails. cost me 30k coins and 30 coupons. and then having this system ret.null
or something like that. so i have no choice to reloggin my account. and when i rellogin all my supports are gone. i dont have a screenshot coz i didnt expect that this will happen again. ive wasted my coupons for nothing, twice. im very dissapointed coz not only i lost coupons by spending in support but also lose the opportunity to win also.