Suggestion using Stripe payment

I’m testing Stripe payment and it’s perfect and very easy. The point is that, currently, my app lists the code for basic accounts of poor people here in Brazil, and other people copy these codes, pay on internet banking and go back to the app and mark the checkbox to inform that they were paid and I enable a text to send a motivating message. When I add the buy button and the user pays a bill after the checkout screen, I need to check this field (paid bill) to cancel that account’s listing and enable this text message.
How can I do this? What do you suggest?
Thx advance
1st screen with code of bill and copy and paste and purchase button

2nd the switch to tell that this bill was paid

Someone could share how was the integration with Stripe? What about the screen after checkout? Thx