Let me attempt to provide some additional clarity.
For the sort of transparent bridging you're looking for, you need what is referred to as 4-address mode (or station-bridge mode) to work between the WiFi devices. This is a non-standard mode (not specified in the IEEE standard), but Mikrotik devices support it amongst themselves. BUT only with restrictions.
The restriction is summarized here:
So rplant's comment was not about which wireless standard the device uses for communication (which indeed can be set easily) but about the wireless package that it runs.
My suggestion would be the same but the opposite 
as rplant's, I'd replace the mAP Lite with a newer device. Like the hap ac2 (if you want the cheapest possible) or the hap ax2.