I am having issues with an authors package. Who do I complain to and how?

I purchased an Aftereffects package and I need to contact the author. Sending emails to him are proving unresponsive. I assumed we were to have support for the licenses we buy. The Authors name is allinavvanilla

https://videohive.net/item/bus-mock-up/23116602

Hi,

You can contact with that author from here Author Contact Form

Thanks!

I tried but didnt get a response. That is why I asked to complain. I’ll try again.
Thanks

Wait for their response hope they will reply to you soon
This is Envato Market Help Center If You Need Any Help From Support You Can Contact Through That Link.

Thanks!