Don’t bother
Fortunately this fine little lantern doesn’t need a phone app, and arguably shouldn’t have one. But if it’s going to have one, it should work. It doesn’t. Do you want to carry a bent paper clip around with you to re-pair Bluetooth Every. Single. Time? Enjoy being told you need to upgrade firmware, then getting stuck in a loop of disconnecting, reconnecting (hope you’ve still got that paper clip!) and being told you need to update again? Then you’re in luck!