In CS-Cart 3.1.1, the following payment methods will be discontinued:
- 365 Billing
- Cardia
- Egold
In order to install a payment, just extract the respective archive to your store installation root directory and execute the correspinding SQL query in the directory var/database/backup. This can be performed via the admin panel (Administration -> Database -> Restore).
Please note that the source code is guaranteed to work only in CS-Cart 3.0.x.