The Supported Platform Matrix link to the Mikrotik RBSXTsqHP5nD ends up at an
Amazon page not specifying a 'nD' device.
The default 'Amazon Supplier' is apt to choose an 'ac' device which is not compatible with AREDN firmware.
Search for a RBSXTsqHP5nD (28 dBm) or RBSXTsq5nD (25 dBm).
'5acD' devices are not, yet, supported.
Chuck