Chastity device discussions and reviews discussion

I’ve had my device on for a full day now. It’s the BON 4, which is my first one, and I’m wondering if I should worry that periodically my scrotum feels chilly to the touch and looks slightly blue. This usually occurs during or after erections that last several minutes or even longer. I haven’t felt any pain or tingling (aside from the obvious pulling as the cage moves with an erection), nor have I had full numbness. Any thoughts or advice would be greatly appreciated, since my goal is to wear it for long stretches if possible.