Hello,
I bought a license 10$
Today i bought an upgrade for get the next tier (15$) but the payment wasn’t just 5$ but full 15$ .
How to contact support or anything in that game ?
Hey there,
First of all ,thanks for upgrading your license! You best write me an e-mail to hello@prosperousuniverse.com to get this sorted out quickly. 
Please include your account name or the e-mail address you signed up with.
Cheers!
(PS: I’ll delete this thread once you sent me an e-mail, since having individual support requests in here would kinda clutter up the forum in the long run. )
Thanks for your answer, i will send you that mail quickly