Hi Semvc.,

1) We have created a test course and purchased using your payment option and it’s working fine from our end after deactivating the Buddypress plugin.

Refer: https://prnt.sc/MJsbCUgoBYbo

2) To customize the email template :

Please navigate to Pages -> Select Email -> Edit with Elementor or WP Bakery Page builder to customize the email template as per your requirement.

Refer: https://prnt.sc/b0J6ruxpj3TE

Thanks!!