Please go to WHMCS admin panel > setup > General settings > Localisation tab and enable the option in your WHMCS admin as enabled in the screenshot.

and then save all products once. like

The issue would be resolved 🙂
Please go to WHMCS admin panel > setup > General settings > Localisation tab and enable the option in your WHMCS admin as enabled in the screenshot.

and then save all products once. like

The issue would be resolved 🙂