Hello,
Thank you for contacting Rank Math and bringing your concern to our attention. I’m sorry for any inconvenience this issue may have caused you.
It seems that your server doesn’t have the PHP extension mbstring which is required for the plugin to work consistently.
Please get in touch with your hosting provider and ask them to enable that extension on your website.
Let us know how this goes. Looking forward to helping you.
Hello. You were right, mbstring was disabled. I changed the PHP version, enabled mbstring and the problem disappeared. Thanks a lot!
Hello,
We are super happy that this resolved your issue. If you have any other questions in the future, know that we are here to help you.
If you don’t mind me asking, could you please leave us a review (if you haven’t already) on https://wordpress.org/support/plugin/seo-by-rank-math/reviews/#new-post about your overall experience with Rank Math? We appreciate your time and patience.
If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.
