Router Login Password Won't Work

I have a hitron router. I tried resetting by holding the reset button on the back, by holding it for 10 seconds. Also tried the 30-30-30 method. Tried the default username and password (cusadmin - password) didn't work. I might've changed the login password last time I was logged in, not it won't work and I can't get in to change it. Please help I need to login so I can port forward for my game.