Newbie Install - No Internet Access from AP

Help, please…I have considerable experience with “consumer level” routers but this is my first Mikrotik. Just installed an RB750GL and I can’t get internet access via my Ubiquiti AP. Wired computers can access everything perfectly, including the web.

Computers connected via the AP can see the network just fine and access/be accessed by wired computers on the LAN no problem, but WAN access is being denied for all wireless equipment.

Configuration is currently set to default, modem on Port 1, unmanaged switch on Port 2 with all wired computers and Ubiquiti AP downstream of the switch.

Thanks in advance,
Don

RB750GL does not have wireless interface.
Make sure your local network device is connected to Ether2-Ether5 ports, and Internet connection link is connected to Ether1.