I don't think roksbox is being maintained anymore.
I haven't been able to login to the Roksbox/Wilddtech website for several months and attempting to use the "Forgot your password?" option just returns a SMTP connect() failed error.
The author of Roksbox, WilDD, has not been active in the Roku forums at all in 2019 despite the Roksbox website indicating the Roku forums is the only method of getting "personalized help."
I would recommend either attempting to use the official Roku Media Player if possible or look for some other alternative on the Roku channel store.