If you have Woocommerce installed, and using WP Simple Pay Lite plugin, then it is likely that you will face error related to “MultiByte String” php extension not installed.
In order to fix the MultiByte String php extension error, you will first need to login to your cPanel control panel.
Please refer to our tutorial about how to login to your cPanel control panel.
Once logged in, please search for word “php” (without quotes), using cPanel search tool.

Now click on “Select PHP version” and you will see “PHP Selector”. PHP Selector is a Cloudlinux PHP tool, that allows to change PHP version or enable / disable PHP extensions for your account.
Please search for php extension “mbstring” (without quotes) in your browser. You will see a checkbox.

Checking the check box against “mbstring” as visible above, will enable MultiByte String php extension for your account.
You then need to refresh your WordPress admin dashboard, to view the changes reflected. The error should have vanished by now.
If you face any problem, or have any questions, please do not hesitate to contact us via live chat or by opening a support ticket .