Advanced PrestaShop back-office module

I'm going to be hosting Prestashop-sites for other people. - Providing the complete package with hosting, installation, updates, backup and support. Additional to the "basic" package (Prestashop core + hosting and support), I want to offer premium modules as a paid service. What I want to do is to let the users activate the module in their prestashop BO and get a pop-up to fill in credit card information. As soon as the credit card payment is approved, the module should be activated. After this the service should be paid for with the credit card monthly. On the same page the user also should be able to deactivate modules if they want. How could I do this? I have thought of some possible ways to do this: 1. Have my own prestashop and sell the modules as digital product. With module download. I dont want this solution because it requires the user to download and upload module, and also I want to charge a monthly fee, and not a one-time fee. 2. The same as #1 but with a serialnumber.. Same though - I could not use this with a monthly fee. 3. Same as #1 and #2 but with some sort of an API / web service connection between my "modules marketplace" and the clients shop. My shop should remotely activate the module one the client shop as long as the module is paid for. If the payment stops, the api should command the deactivation of the module - maybe after a warning email is sent to the client. 4. No external "addons-marketplace", but all payment and module management is made within the client BO. How could I do this? I'm really not sure how i could solve this.. Any idea? I obviously are going to use a skilled developer and a creative "I'll solve anything"-freelancer for this project. Please make a bid together with your idea on how to solve this challenge. I would accept only a bid with a clear idea on how to solve this. Key-points: - Simplicity for the client - easy activate, easy payment. - Easy for the client to see what they are being billed for, easy to deactivate. - Possibility for me as a service provider to have statistics on what client has paid for what service etc. - The "basic service" (hosting and prestashop core installation + support) should be one of the paid services, but one that cannot be deactivated without shutting down the site. - The module should also contain a support ticket system so that the client could contact us with issues from within their BO. - We should be able to use Prestashop payment modules (the module I think of would be installed on every site we host). We will launch our service using Prestashop 1.7 - have this in mind.