Hello,
Thank you for contacting Rank Math support, and sorry for any inconvenience that might have been caused due to that.
Please try rebuilding the index, then manually deleting old imported data, and start the fresh data fetch. This should allow you to retrieve fresh data from your GSC and GA. Please follow these steps:
1. Head over to WP Dashboard >> Rank Math >> Tools & Status and click the ‘Rebuild Index’ button 
2. Head over to WP Dashboard >> Rank Math >> General Settings >> Analytics tab, and click the ‘Delete Data’ button and then click the ‘Update Data Manually’ 
3. It will start the new data fetch from Google. You can reload the page to see the notice related to the import process.
4. Once the process is complete. Please recheck the Analytics page.
Let us know how that goes. Looking forward to helping 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.