This shop may vioalte the rules since bits/cp’s probably can’t be transactioned like this for “real world” products.
Their FAQ covers how their points work
What ways do I have to earn points?
Watch MateoZ live, you earn 1 point every minute. Twitch subscribers will get 5 points every minute, activated when you comment 1 time on streaming.
Participate in the DROPS and DRAWS of points that MateoZ will do when he sees fit.
Buy bits, 1 bit equals 1 point.
There is no usage of Channel Points on this site to my knowledge. They use a custom currency, not Twitch’s