If you are seeing that Ezoic is a managed partner in your Adsense Account it looks like your Adsense account may be linked with our Ezoic Adsense account but hasn't pulled through to our Ezoic system. This will be why Adsense is not yet showing as linked in the dashboard.
I would suggest reaching out to your Ezoic representative with your Adsense email address and Adsense Pub-Id they will then be able to check this and pull the Adsense link through to the Ezoic system if needed.
If you are not seeing Ezoic as a Managed partner in your Adsense account then it looks like the link may have been removed and you should be able to link it through the dashboard AdSense link. If not reach out to your Ezoic representative with your Adsense email and they will be able to create a new invite link for you.