Login-related Errors
Cannot access Salesforce. Verify your Login URL
This can happen if Custom Host (or Connection) URL is mistyped. Correct it and try again.
An unexpected error has occurred while connecting to Salesforce. Re-login to proceed.
This can happen during any operation such as sync, when user’s access to the connected app for the mobile app is revoked in Salesforce org. Logging in again will resolve the issue.
User is not admin approved to access this app
This happens on trying to login or re-login, if ‘Admin approved users are pre-authorized’ is the Permitted Users option selected (in OAuth policies section in Connected App Detail page), and user’s Salesforce profile is not added to the list of allowed profiles. This can be resolved by adding the profile, or by changing the Permitted Users option to ‘All users may self-authorize’.