Redirect Problem

when i click to checkout button for tranzila payment option, then link redirect to https://direct.tranzila.com/n-sikun/ how cant i redirect tohttps://direct.tranzila.com/merchant page and also how i can Login to https://direct.tranzila.com/merchant account. please help me for this problems

https://ww.wp.xz.cn/plugins/tranzila-payment-gateway-for-woocommerce/