If your wordpress blog or any other application is giving error :
"Xyz plugin" requires Multibyte String to be installed
then you need to enable mbstring php extension, which can be done from cPanel -> Select PHP version.
One such error commonly known is:
WP Simple Pay Lite requires Multibyte String to be installed
To fix above error, first login to your cPanel and select Select PHP version tool :
Once logged in, go to Options -> Search for mbstring -> check the box against mbstring
This will enable Multibyte String for your account.
Now login to your Wordpress admin dashboard and refresh your browser, to view the changes.
If you face any problem or have any questions, please do not hesitate to contact our 24/7 support.