"Check out now" & login to check out buttons not working right

The buttons mentioned in the subject are redirecting to an invalid url(https://ringersbullets.com/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/~ringersb/store/shopping-cart/shipping/), see screenshots. Any suggestions would be great, this is very urgent as the client has promotions lined up for this weekend.