Tap the Menu button on your Android device (either a physical/capacitive button or on-screen) --> Tap Settings --> Tap Space allotment --> Tap Unlimited
Support Center
Why does the app keep deleting my comics?
If you notice that comics are getting deleted from the My Comics section, it's likely that you have a limit set on your space allotment. Thankfully, you can set it to Unlimited.
Tap the Menu button on your Android device (either a physical/capacitive button or on-screen) --> Tap Settings --> Tap Space allotment --> Tap Unlimited
Tap the Menu button on your Android device (either a physical/capacitive button or on-screen) --> Tap Settings --> Tap Space allotment --> Tap Unlimited