Nite lites used to sync, now one won’t

Power & Lighting
,
1

I’ve had the lights for awhile & have synced after charging many times w no problems.

Now one light is refusing to sync with the other two. The other two work just fine.

Any thoughts?

Thanks.

2

Interesting, are you able to sync it with just one of them, if the other ones off, or it just flashes until eventually failing?