oney.
Good to see that, but you need to do that (phone number), with the offer $50, that possible cheater could be created a thousand Gmail accounts (with .dot and + trick) to receive your offers, for example:
example@gmail.com
exampl.e@gmail.com
examp.le@gmail.com
examp.l.e@gmail.com
exam.ple@gmail.com
example+01@gmail.com
example+02@gmail.com
example+03@gmail.com
If you find it like that, you have to immediately ban that account asap.
You mentioned one of cheating ways from cheaters and Jumbo Ticket team should pay attention on it as well as build up a good detective and preventive mechanisms against it. Below is an article which wrote about a simple method to create multiple email accounts. In fact, it belongs to only one email and owner will receive all inbox messages from all derivative email addresses.
How to Create Multiple Email AccountsPrevention is better than cure. Usually, if you let cheaters freely to register their accounts and participate in your jackpot, then if they win big, and the team only detect and freeze their winning rewards, it will cause scam accusation. It happens on many casinos.