Difficulties with wearing a device? discussion

On Monday, my mistress secured me in the holy trainer v2. About halfway through Tuesday while I was out walking around town, I realized my right testicle felt off. It had pulled up and wasn’t sitting where it should be beneath the A ring anymore. Fortunately, there was no pain, but it stayed like that throughout the day. By evening, just before getting ready for bed, I checked my cage and noticed the entire unit was lower than usual, with over half of my penis showing or sticking out. There wasn’t much point in trying to adjust it since pulling it back didn’t help much. Only my left ball remained trapped inside the device. I didn’t want to sleep like that because rolling over could potentially cause damage. After a quick search online, I learned that getting aroused and erect helps tighten the balls down. I managed to do this and slide my left nut out of the cage… phew! Has anyone else experienced this or something similar with HT v2? Any advice on how to prevent it from happening again? Thanks