Puchase code can not be verified

I purchased a theme at Themeforest, but the purchase code could not be verified. I found nowhere to get email contact help from Themeforest.com, therefore i submit the topic here to check if anyone can help me or can give me the contact for help.
Thanks

I purchased the them from https://themeforest.net/, but there is no contact information at the website. I don’t know how to contact them for help.

Hi

I can’t find your account (22way) in envato market. please contact your purchased item author from the original purchaser account. Item author will be happy to help you.

How to contact an author:

Thanks