E501's bouncing from Maestros perspective

We've been heavily deploying E501s for suburban community connectivity, backhauling with ePMPs to our network, everything seems to run generally smooth, but we get a lot of "Device Offline" from Maestro on them, some several times a day. The devices are not rebooting, and it's not the entire site going down, just perhaps 1-2 of the 3 sectors at a time. Has anyone come across this issue before?

What is the version running on the devices and what are you using Cloud or On-Premises to manage these device.