Pass MAC from Unifi and Bridge to Mikrotik Router

We have a large wifi network and a problem troubleshooting the network since the router is only seeing the MAC addresses of the bridges and not the end users laptops.

Example:
2 Unifi APs in one building, connect to a Mikrotik RB250GS (acting only as a switch), an M5 connected to the switch to link up to the main backhaul which connects to another switch and then our router. The router is Mikrotik with Hotspot setup. The Hotspot can see who is logged in, but the MAC address for those users is the MAC of the NSM5 bridge rather than the MAC of their laptop.

How can we resolve that so the MAC is sent all the way to the router?

Thanks.

FYI - this was fixed by using WDS on the Ubiquiti M5’s. Once that was enabled, the MAC was transparent to the router.