Mikrotik SXT CPE Not Connecting to Ubiquity after Firmware upgrade in Mikrotik CPE

Sir, I have installed a ubiquity Rocket M5 with 19dbi antenna, and airmax is also disabled and the firmware version of AP is 6.0.3 (XW) (tested even with XM Devices) . Mikrotik clients not connecting only after firmware upgrade in Mikrotik SXT from legacy 5.26 to latest ones or even tried flashing manually but didn’t work. After several days of trials i found out that i cannot connect my sxt if it is upgraded to 6.37.1 or later. I can upgrade maximum version up to 6.36.4(bugfix). If i upgrade to newer than 6.36.4, it wont connect in any mode, i mean to say station wds/ station pseudobridge. It just keeps showing searching for network and it won’t connect. I am facing this issue with the newer firmwares only with every mikrotik client. Please Help me.

Here are some screen shots of my Ubiquity AP config.
connected clients list.PNG
ubnt ap.PNG

post the sxt export…