Hello Ronaldo,
I finally heard back from our Cloud Team Manager who says FB check-in is not supported now,
nor will it be supported in the Alto (SZ 5.2 based) Cloud Wi-Fi either. We offer a FB Social Login
instead of FB Wi-Fi in which the captive portal is hosted by FB itself. A feature request is being
submitted, but no ETA can be predicted at this time. With best regards.