Website Authoring on a 3rd Party Design Platform For Sale on Envato

I am designing website templates on toohoot.com and would like to sell these on envato. Buyer can create a free toohoot account and edit the template to suit their needs in their design studio. Is it possible to sell templates designed and hosted on other platforms through my envato authoring account? The template is copied to the buyers account and the buyer has full control of their version going forward. If anyone needs to see what I’m talking about the url for toohoot is https://toohoot.com.

Apologies if this question has already been asked and answered. I just haven’t been able to find a similar question.