How to buy a q2a licence for my own created theme? For anyone will not copy like my theme?
You cannot buy a Q2A license. All derivatives of Q2A, such as plugins and themes have to be GPL.
You can find answers to some questions expected questions here: https://question2answer.org/qa/46924/how-to-distribute-q2a-plugins-and-themes
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.