1
Settings
Go to the settings menu in your iOS device.
2
Safari
Select the Safari browser from the list.
3
Cross-Site-Tracking
Scroll to the Data and Privacy section and deactivate "prevent cross-site tracking".
4
Clear Website Data
Scroll a bit further and click the "Clear History and Website Data" field
5
Close your Apps
Go to your task manager and close the Grape app and your Safari browser.
6
Open Grape
Now you should be all set. Restart the Grape App and log in with SSO.