Well, that certainly qualifies as unusable in your situation. You should probably open a ticket manually and provide the OS info, etc. Or perhaps they can reproduce but given there's a gazillion different phone hardware/OS levels ZWO may not have this specific combination.
From this screen https://bbs.zwoastro.com/t/seestar , upper left hand side is "Ticket"
Also, instead of disabling internet access, you should be able to turn off automatic updates for this app in the Play store (I'm an iphone user so I'm basing this statement on googling it).