So I have now upgraded the Beryl MT3000 to 4.7.0 beta o24, but without success regarding captive portals.
I have tried all the steps as mentioned before, and the automatic hotspot feature still activates, but the captive portal is not displayed, just a blank page which is loading.
trying to enter the router ip, dns server ip, captive.apple.com, nossl.com ... nothing works
BSSID: B8:50:01:07:AB:F0 (Qatar Air)
BSSID: CC:DB:93:DB:51:0D (Doha Airport)
but it's the same with any captive portal, hotels too
any ideas?