In some reasons you can have problems with the Theme activation:
1) “Purchase code is wrong” – check that you activate the main theme (not the child). After go “Theme Options”->“License”, insert you purchase code (check that it hasn’t spaces after (you can mistake copy it with)), click “Save” and wait 5-7 sec. After that, click “Register the code”. Some servers have delay and waiting 5-7 sec.
2) “Something wrong, please try later” – you need to try to activate it later. If it won’t help – the problem in incoming and outcoming queries from your hosting. The firewall on your hosting blocks it and our license system can’t check your purchase code and send the status. In this situation you need to contact your hosting support to allow incoming and outcoming queries from the domain