I have 2 towers both around 3 miles away

site 1 : rb433uah running hotspot on ether 2 and ehter 3 which are bridged togather. ether 2 is connected to the local wired network and ether 3 is connected to a ubnt nano bridge m5 22.

Site 2 : rb751u-2hnd also running hotspot. ether 1 is connected to the local wired network. ehter 5 is connected to a nano bridge m5 connected to site 1 and running dhcp client

Site 1 rb433uan has a mac login for the nano bridge at the other site.

The Problem is that when the nano bridges are powered on the Nano bridge of site2 shows up in the active users in hotspot at site rb433uah but it keeps on connecting and disconnecting. If the nano bridge at site is connected directly to the wired network all works well on the pc the it works well but when the second mikrotik rb751u-2hnd is attached in between it keeps on disconnecting.

How can i fix this problem ??

both the nano bridges are getting -65db signals -90 noise floor and 100 percent ccq