Forces XenForo to use the Paypal sandbox.
When this add-on is active, XenForo will refuse to talk to live Paypal.
Log in with your paypal account into https://developer.paypal.com/, and ensure you have a Business sandbox user and a Personal sandbox user (you may need...
What does this add-on do?
When this add-on is enabled, all account upgrade requests will be sent to the PayPal Sandbox. This can be used to test that your account upgrades work without having to send real money or having to have two real PayPal accounts.
You can create a PayPal Sandbox account...