Your Lockly® must be in Secure / Do Not Disturb mode. There is a toggle switch on the inside of the lock that turns off and on the exterior Screen.
Make sure it is switched to ON.
If this does not resolve the problem, please reach out to Lockly Customer Solutions at help@lockly.com or by calling 1-669-500-8835 M-F from 7AM to 7PM PST.