Hi Dennis Chiang - Sorry to hear about the issues with the Android app here! I've been doing some testing on my side and I haven't been able to reproduce the issues around the missing link in the side navigation panel or picture not showing up. I'm also not seeing any bug reports around this issue.
At this point I'd recommend opening a new support case in your secret support group so that we can take a deeper look into this particular issue and your instance. To assist with that case, it would also be good to see if you're also getting those issues when you try to log into Jive Community (community.jivesoftware.com) from your Android device. This could help tell us if the problem is specific to the Mobile app install, or if it only happens with your instance.