Flow isn’t a points/loyalty app, but a lot of them are connected to Flow so you can use Flow to reward points. If you are looking to create your own loyalty tracking, you could potentially use metafields on the customer to store that data. But know that you are effectively building an app and it will require some work on your end to figure out all the details.
From a quick look at LDT course app - it doesn’t seem like they integrate directly with Flows / offer webhooks to when an event / action is performed on their app.
Basically here’s a plan of action for you.
Reach out to LDT support team and see if they can integrate with flows as a trigger / offer a webhook
If either of the above are possible - then you can use any loyalty solution available to give a credit / reward to the customer basis this.
I’m replying here because we also offer a loyalty platform that works not on points - but real redeemable $ amount as credit on the wallet + offer integration with flows on our free plan itself.
If that’s something that you’d like to check out - feel free to get in touch with us.