I was working on a similar personal side project when I discovered Telemonetize, and I love the use of bots. The only thing I dislike about your product is that it's not mine :) (which is yet to be finished). Kudos 👌🏼
Dashboard does not have an option to cancel free trial. Only support or contact option is the owner's Telegram account and the owner does not respond to messages. Stripe requires a support email but the owner does not expose it on the website. Had to contact Stripe to cancel my subscription.
