2.4Ghz devices won't connect to MR60/MK62 Mesh Router

when mesh first came out this was a bit of an issue. I haven't had any issues with it in the last several years. 

What I used to do was this. (there was 2 routes I used. 

route 1: I'd turn off my router and setup a hotspot on my phone using the same ssid/password as my router on the 2.4ghz. Then I'd get my device setup, turn off the hotspot and turn the router back on. Devices auto connected

Route 2. I used an old 2.4ghz router for setup. I'd turn off the mesh router, turn on the old 2.4ghz only router, and then set up my devices with the same ssid as the mesh ssid/password. Then turn off the old router and turn the mesh back on. 

Again, I haven't had to use this method on a long time. I haven't even needed to use the disable ssid broadcast for 5ghz option that others have used. Devices have just connected.