I've seen that the current circulating supply of the coin is almost 22 mln. Just
one question: what is the maximum supply like for Bitcoin for example which have 21 mln as its maximum.
Anyone can help?
I just sold 1/2 my RUP last night due to its price going down a little bit for temporary hold the other coin and plan to buy RUP back but unfortunately the other altcoin was dumping while RUP keep pumping. How can I get my RUP back?
Buy again fast while it's still at low price

Agreed. Today at coinexchange.io is at 0.00000850 and the last time I see the price is around 0.00000450 hours ago. I also believe that this project would be great.