Dude you are around here since 2014, you know how things work.
You payed money and got what you paid for, no one ever said you won't get banned, no one will ever say that and anybody that says it's 100% safe is just lying to you.
I can understand that you are upset about the fact that you got banned within 2 weeks of the release, anybody would be, but you took a risk and you knew it when you bought it.
If you believe you are safe just because you pay money for cheating you are wrong, eventually you will get caught, doesn't matter how long you can stay under the radar, the risk is always present.
As for your other question, you can get a refund upto 14 days after you bought it as far as i know.
[edit found it]:
http://www.watchover-tyrant.com/tos.html
Two weeks from purchase date, no question asked, Refund Policy. Please send the Key you bought to
[email protected] and ask for the refund. Payments will be refunded within 24 hours.
^ someone said this email is not working, here is one that should be..
Bossland GmbH 'front office'
If you choose to not refund, you will have your subscription get extended for the downtime, that's how it always was with buddy products, and this should not be an exception.