I am able to configure the router/radio0 as a 5ghz access point, but unable to add a 2.4ghz access point. When I do, both access points are disabled. The radio0 initially is on, but quickly goes off. The thing is, Raspberry Pi Zero 2W only uses 2.4Ghz so the router can’t be used for this setup.
Apparently, there are some issues, but you can run 2.4 with some limitations. See: