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.
Please follow these steps for initial troubleshooting:
1. Please delete RankMath’s app from here:
https://myaccount.google.com/permissions

2. Re-create tables by clicking WP Dashboard > Rank Math > Status & Tools > Database Tools and click the Re-create database Table
button.

3. Reconnect the account inside Rank Math by clicking here and ensure that you approve all the permission notices that show up:
WP Dashboard >> Rank Math >> General Settings >> Analytics tab, and click the Reconnect
link

Allow all the permissions on the next screen.

4. Let the process complete, which might take around 30 minutes.
5. Now head over to WP Dashboard > Rank Math > Status & Tools > Database Tools and click the Rebuild Index for Analytics
button.

6. Please check if the data shows up here and if the Overview widget is already working:
/wp-admin/admin.php?page=rank-math-analytics#/

Let us know how this goes.
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.