WHMCS Callback Issue - Data has been tampered

[syafi-dev]

Hi,

After user make payment from whmcs to billplz, it return Data has been tampered and invoice status not updated to PAID.

Kindly please help to fix it.

WHMCS Version : 8.1.3

[wzul]

Hi.

Kindly check your X Signature Key value. Alternatively, you might be interested in upgrading the plugin as follows:

• Have a full backup
• Rename table mod_billplz_gateway to mod_billplz_gateway_old
• Delete folder /modules/gateways/billplzPay
• Download overwrite the plugin files to your installation directory
• Re-configure API Key, Collection ID and X Signature Key

Hope this helps.