When i open the app it doesn't do anything other than connecting.
I'm on a huawei g300 running custom cyanogenmod android 4.4.2.
What troubleshooting steps have you tried?
Clearing Zenbooru's app data?
I've tried everything from rebooting to shutting down to clearing cache and dalvik cache and nothing.
I even tried waiting for 15min and still nothing.
Did you add any sites?
If not can you try adding boring.booru.org and unticking demo.zenbooru.org
The only thing i can do is exit the app.
I can't do anything except to look at the screen circular animation saying Connecting...
You mentioned you are running a custom cyanogenmod android 4.4.2, can you provide me with a copy of the system image (the one you used to install with)? I could then run it in an emulator which would make debugging this much easier.