Click the Refresh symbol when you have verified your domains, and make sure that the domains are verified in Azure. "Not added" usually means that AAD Connect could not find a custom domain corresponding to the UPN suffix. You need to add and verify a custom domain corresponding to the UPN suffix and ensure that the UPN suffix is not changed to default .onmicrosoft.com,
If your directory is not detecting the verified domain it is possible that you are authenticating to an alternative Azure AD instance or there is an issue where it's not returning your verified domain. If possible can you send me a mail with your domain name, initial domain name, and tenant id? (AzCommunity@microsoft.com).
Also, make sure there's nothing wrong with the connection between the machine and the tenant.