Even if someone pays you offline, you are able to record the payment within LeagueApps. They will need to be registered for a program with an invoice created before an offline payment can be recorded. Learn how to manually register users
Find the invoice that was created when the player registered for the program. You can do this by searching the player's name in the Search Bar
Once in the invoice, click "Add Offline Payment".
Enter the amount they paid you and the type of payment. You can add a partial amount for an offline payment.
Click submit and you're good to go!
Editing or Removing an Offline Payment
If you need to edit or remove an offline payment, find the Invoice and click the X next to the offline payment amount. To edit, delete the recorded payment and then submit the new accurate offline payment.