Make sure that Bluetooth, location, and mobile data are enabled on your phone. Remember to disconnect your phone from other devices such as headphones, hands-free sets, smart bands and watches. If all the conditions mentioned above are met and the app still does not connect with the locker, close and reopen the app. After checking the above-mentioned settings, try to open the locker again. If these steps do not solve the problem, contact the hotline at 22 571 52 52 (call costs depend on your phone tariff).