For this idea, I don't know if it's possible at all, but it could be good and give you an extra advantage if we could get a pc back, I explain:
You enter in partnership with a company that sells pc's (like TopAchat, materiel.net,...) and you take pc's equivalent to those of shadow. When the balance to pay arrives at the price of the PC equivalent to that of the shadow plus 2000€ of margin (for example), one has the possibility of recovering this PC, which would already make it possible to decrease the number of people connected to shadow at the same time, and would allow your partners to make sales, and you more profits.
And for the customers, it allows them to pay their pc in several times, but without obligation to pay every month.
This is an idea I have for a while, I think it's good, I'm waiting for your feedback 😁
Have a good evening / day