The following are the steps for migration:
1 - Connect Stripe as a legacy payment gateway using the below method:
2 - After that, we need the following data in the attached format:
I've attached sample files for your review (at the bottom).
You will need to export the customer data file from Stripe, and you should be able to get the subscription data file from your existing app.
To export data from Stripe, please follow the article I've included below.
How to export data from Stripe
3 - After you provide us with the data, we will run the validations on our end and let you know if something is missing.
4 - Once we get the final updated data, we will run the migration and keep them in Paused states so that they do not get double charged from Appstle and your previous subscription platform.
5 - You can see the migrated subscribers in Appstle after the final import,
6 - You can also watch this loom video to understand the values in each header for the below subscription-data sample file.
https://www.loom.com/share/93f5bdfb53044fbfa579ec24b26c073c?sid=39420f8e-22e3-4e27-9d1a-39010228b7dd
Subscription Data Sample