Check that your time zone settings are set to update automatically:
When signing in, some users may see messages like Unauthorized or Invalid username and Password. Sometimes this happens because of incorrect time zone settings, so setting your time zone to update automatically can guard against messages like this.
To check your time zone settings:
Tap the Settings app icon on your iPhone.
Select Date & Time.
Make sure the option to Set Automatically is enabled.
However some users see these messages due to having outdated versions of the Portfolium app. Double check the App store on your device to make sure you have updated the app recently.