Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
This error usually occurs due to one of the reasons mentioned below.
1. There’s an issue with the zip file you’re uploading.
2. You try to update the PRO version while connected to the free account on your website.
3. WordPress doesn’t have enough memory on a webserver to unzip and upload the zip file contents.
Please follow this guide on How to Fix PCLZIP_ERR_BAD_FORMAT. Following the guide will solve the error.
Looking forward to helping you. Thank you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.
