CB Range discussion

Hi there, I had the CB600s on for roughly a week not too long ago, my first time wearing them. I was engaging in some of those online teasing sessions you might encounter while locked up, and it feels like something went awry when I was grinding against the floor. The tissue along part of my shaft has turned darker and isn’t quite as sensitive as before; also, my erections don’t seem to be holding their firmness like they used to. There’s no pain involved, just this darker hue around the shaft making it a bit trickier to get fully erect without manual stimulation. I’ve kept up with masturbating since then, but I plan to take a break from that to see if things improve. There are quite a few knowledgeable folks here, so I was wondering if anyone else has dealt with something like this while using a chastity device. I’m fairly worried, though not panicking because I haven’t completely stopped touching myself. Any advice or thoughts would be greatly appreciated!