您必须年满18岁才能拥有组织开发人员帐户，并且必须年满13岁才能单独注册.要查看解释要求和收益的完整图表，请访问 Apple的网站. >

I'm trying to set up my own paid developer account to publish my first app. When I'm doing it I think I first have to enroll but then I get this error:

Sorry, you can’t enroll at this time.

Does anybody know, why that error is shown? My only explanation would be, that I'm not 18 years old. What should I do instead?

You must be at least 18 years old to have an organizational developer account, and 13 years old to enroll as an individual. To see a full chart explaining the requirements and benefits, see Apple's website.