When using ADS penis gets a little bit cold?

I made a manual ADS device similar to the Captain Wench from this forum. However, if i wear it for an hour or if badly wrapped for half hour my penis gets a bit cold, especially in the grip area. Sometimes it even gets purple. Not too purple though. Is it normal or I’m doing something wrong?

By the way, I’m uncut and that can be an issue too, right?

I assume your device has a noose attachment. That seems like a pretty common experience. I’d say maybe try taking it off to quickly restore circulation every 30 minutes or so then you should have nothing to worry about. Purple is a sign of venous congestion, and while it’s not automatically dangerous once or twice it could be eventually cause damage/problems over time.

thanks!