Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
This is quite unexpected, is this the first time you are installing the plugin?
If so, could you please delete the plugin folder via FTP from your wp-content/plugins folder and perform a fresh install?
Next, head over to Rank Math > Dashboard > Setup Wizard and follow the prompts.
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.