Have you tried the redo the plugin setup? I ask because what may have happened is that you didn't grant all the required permissions for Site Kit to pull data from your Analytics or Search Console account.
As you’re a Site Kit user you can also open a support topic over on the plugin support forums. Alternatively, see the below guide:
https://sitekit.withgoogle.com/documentation/troubleshooting/dashboard/#notallowedaccess
Have you tried the redo the plugin setup? I ask because what may have happened is that you didn't grant all the required permissions for Site Kit to pull data from your Analytics or Search Console account.
As you’re a Site Kit user you can also open a support topic over on the plugin support forums. Alternatively, see the below guide:
https://sitekit.withgoogle.com/documentation/troubleshooting/dashboard/#notallowedaccess