Looks like the AP is losing cloud connectivity due to poor signal quality for the mesh link. Are you able to move the repeater closer to the gateway AP to see if it stabilizes? That or maybe tweak how the external antennas are attached to make sure they have a direct line of sight with the gateway AP. If you can't move anything, Meraki support will at least be able to confirm if my theory is true so it's worth opening up a case with them.
... View more
