Yes Radcodes used to be in the marketplace but he chose not to update his plugins to remove source and database edits for certification and so we do not know if he is still supporting his old plugins. Best to ask him but be aware of the edits to database and files. Cannot easily remove plugins that do that.

I saw your suggestion somewhere to a member to apply the below code to his database, and I did apply that to MySql database to clear the Paypal info and it worked like a charm.

UPDATE `engine4_payment_gateways` SET `config`= null WHERE `title` = 'PayPal';

My two weeks problem has been solved 

Thank You very much