Their in-store WiFi is a repeater more or less. It's one of those bullshit forced auto-join networks that you can't opt out of (at least on iOS). Because that's not a massive vector for phishing or anything.
At one point I also had to disable wireguard because I think it was triggering some sort of anti-abuse thing they had. It wasn't even using an exit node, just bridging me to my home network so I could access self-hosted services. I get the desire for anti-abuse, but that felt pretty draconian and I don't expect the average person to consider they might have to disable a VPN to get it to work, especially nowadays when many average people do have VPNs running.