Pathway lights not detecting motion

I installed 7 pathway lights this week. On day 1, they were all working perfectly. On day 2, I noticed that the lights were not turning on with motion. Once I manually turned on the lights in app, motion seemed to work. Today I noticed it again, so decided to uninstall all the lights and reinstall. Was working well until 5 minutes ago when they stop detecting motion. The only one that seems to detect motion is the 7th one, which is the furthest away. All are set to detect motion at the highest level. Any ideas what it could be? I can't imagine 6/7 are