I want to cancel my subscription to coin snap but the the places you tell me how to cancel does work

Check here -> About CoinSnap Premium.

Payment will be charged to iTunes Account at confirmation of purchase

• Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period

• The account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal

• Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable

• Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase

See:

there is NO cancel subscription option with CoinSnap. Next??