Hello,
Thank you for contacting the support, and sorry for any inconvenience that might have been caused due to that.
The Search traffic is only available for the PRO user. Could you please share your PRO account username/email in the Sensitive Data section so we can confirm?
Please refer to this guide to fix the zero search traffic issue: https://rankmath.com/kb/zero-search-traffic-error/
If the issue persists, reconnect the Analytics account, to regenerate a new auth token from Google, by going to WordPress Dashboard > Rank Math > General Settings > Analytics and configure the Analytics settings:

Do ensure all permissions are allowed: https://rankmath.com/kb/connect-your-google-account/
Once reconnected, the data fetch should start automatically or you can follow this guide to delete old analytics data and manually fetch the data: https://rankmath.com/kb/delete-old-analytics-data/
Let us know how that goes. Looking forward to helping you.
Hi-I reconnected and it appears to be working. Thank you!
Hello,
We are super happy that your issue is resolved. 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.