Errors in membership and recurring payments

Hello, I have found the following errors in the plugin:
First we have created a Premium plan in memberships (recurring payment of 1 day).
Then from the frontend we create a seller who chooses the Premium Plan and pays with Stripe’s trial credit card (Stripe’s Woocommerce account is trial).
If we go to the administration, vendors, affiliation control panel and choose that vendor with an active Premium Plan and we as administrators want to unsubscribe from him, his mode of payment goes from Stripe credit card to FREE and does not allow him to eliminate it.
The problem is that it does not allow you to eliminate that Premium subscription either from the administration or from the seller’s account and the payment days are increasing each time it is given to cancel.
Another problem is that when the renewal day arrives, neither an automatic charge occurs nor is the subscription cut because it has not been charged, the renewal days pass to the next day and the seller continues with his active account without having paid.
Why these important problems happen, could it be by using a stripe test account? I have used bank transfer and bank check and the same thing happens.
Greetings and I hope you solve the problems of the best marketplace plugin that exists.