Issues related to subscription cancelation

I am getting unfair reviews, not related to my extensions, but to some adobe exchange platform/marketplace disfunctionalities. 

Customers are complaing about not being able to cancel the subscriptions. (https://exchange.adobe.com/apps/cc/106188). 

First of all: This is ridiculous! Why am I responsible for the exchange platform issues? There is nothing I can do...

Secondly: Is anybody moderating these reviews? Because my sales are seriously affected & the customers are waiting for a solution.

The Adobe Support Team is not giving me a straight answer...