Hey,
This is not something I have the power to do unfortunately, since the store is managed by OSBot. You will have to get in touch with the community administrator, @Maldesto, although I cannot make any guarantees that he will be able to switch it for you! Many people seem to make this mistake - may I ask, how did this happen to you? I'd love to hear some feedback so that I can do my best to stop it happening to others in the future (:
All the best
Apa