Battery Door Lock with Wi-Fi “offline”

I have an issue with my smart lock going off-line and won’t reconnect to Wi-Fi. I’ve tried putting in new batteries but the system seems to have no power. This is after less than 1 month of use. Any help from someone with experience would be appreciated as I’m kind of dead in the water right now.

When you put new batteries in it did you hear the start up sound? If not then check and make sure they are new batteries and are put in the proper orientation