Full Belts discussion

So about a month ago I purchased a full belt… When it comes to chastity, the concept of a complete belt appeals to me.. Anyway, I picked up a Chinese knock-off from eBay. I’m not entirely sure which model number it is… The best description for the model is what I found out from the seller who sold me the belt.. Here’s his website along with the version I bought..

The issue, though… Despite how tightly I secure it, I seem to be able to slip out of the tube. On top of that, at this current tightness, my groin starts going numb and I get hip pain. It also brings quite a bit of discomfort in the balls. I haven’t managed to use the bathroom while wearing it yet; not because I didn’t try, but I believe the device restricts me from doing so… Any suggestions? At this pace, I might not be able to make this belt work… help…