Sounds like you want to add a watchdog feature. Yeah, I use that on Uniquiti nanostations for a P2P link which is handy.
Anyway it sounds like a wonky edge case between asus AP and OG. Have you considered getting a UniFi AP? I have an AC lite with several SSID’s and vlans with an edge router X SFP at the head.
Do you enable/disable these ssid’s on a regular basis?