I haven’t done it before but I would have to imagine when you changed it to AP mode it changed the devices IP address to avoid conflict with the main router.
Try going and logging into your main router in the house and look at the attached devices. See what the new IP address is.
I’m talking out of my ass right now though
Because it’s the only Android brand that I can get on the secondary networks. Simple as that. I could get a pixel but it doesn’t come with the savings on these secondary networks.