Since October/November 2021 the app crashes after 30 seconds when viewing any list (shopping list, to do list, etc). The email address in the Developer Contact section isn't valid (I get returned mail) so I can't seem to connect with anyone for help. Please fix, and update developer contact. Update: the developer email is still giving me bounceback errors, nobody is responding from Amazon and the issue persists. Switching to Google products after tax refund if no resolution.