This procedure has proved to work as a solution for several issues, since it produces a complete reset of the malfunctioning IBKR app.
1. Go to your phone's Settings Menu
2. Below the Phone section, select Applications Application Manager
3. Scroll down and select the corresponding IB app which needs to be reset.
4. Tap on Storage
5. Tap on Clear Data OK
6. Confirm Data has been cleared.
7. Reboot the phone
8. Re-Launch app
Note: If after clearing the cache, manually adjusting the permissions and restarting your Android Device, the issue persists, please contact IB Customer Service for further troubleshooting.