Few reasons -
1. I had heard of it, as know of ppl who go to it (from facebook posts), so I searched it to see if they are on pushpay
2. They seem to organize very expensive flash conference/events and have a very flashy website, so must get loads of money from <somewhere>
3. Seem to appeal to hip generations, so appealing for smartphone gens etc
So, was genuinely surprised when there was no mention of pushpay on their very appealing, modern, flashy website.
My point is that either ARISE is not very interested in pushpay, or, no one at pushpay is chasing up clients to make sure they are advertising it as a payment method.
Sample size of one. Just an observation, that's all.