TRL uses client id trlsocialclub for both individual and teams registration. They use program id 0 (which is quite misleading as it is named social club) for individual registration.

Direct debit $6.50 is charged for all direct debit registration on the same day of registration.
The 6.50 value is added from the backend and is configuredfrom customer properties.

The weekly direct debit is entered in the class properties.

6.50 will be debited on the same day and the weekly direct debit will start the next day of the next available session. In the example below, I had registered on the 25th of nov 2022 .

Whenever they update the direct debit amount we have to update this

Also check if these two templates – confirmation and the registration approval emails have relevant information.