You connect to the mobile application by going to
and click the [Salesforce Login] button which forwards to Salesforce to authorization.
If you work with multiple Salesforce accounts, use the [Reset] button for force re-authorization.
The Login button changes to [Salesforce ReAuthorize].
If you have problems getting past the Salesforce screen, make sure that you no not "Always Block" cookies.
For Safari, go to > Settings > Safari > Block Cookies
and select any other than the "Always Block" option, e.g. "Allow from Current Website Only".
To login into a Sandbox, use
and click the [Salesforce Login (Sandbox)] button which connects you to test.salesforce.com.
Connunity (Portal) User
Portal users need to be validated with the organization directly. Use
where <server name> is the salesforce url, e.g. https://accorto.my.salesforce.com