Isabel 6 - Error: "A branding library has been found, but it's badly or not signed ..." when trying to logon to Isabel 6 (33597)

To use the Isabel 6 application on mobile, you need to install the mobile app :

1. Get the app from the app store
   
2. Login to Isabel 6 and in the middle column click on "Manage Mobile Account"
3. Click on activate device and then on start activation
4. Choose your Mobile PIN
5. Scan the generated QR code with the Isabel Multibanking app
6. Enter your Mobile PIN and you will be logged in
7. Click here for more information and restrictions