Firefox every time blocks my smartphone access to Starbucks WiFi

Saying site is insecure - yes, of course it is, we all know public wifi is insecure. I use a VPN, but can't until Firefox allows initial connection. What bugs me is that the original warning used to be followed by a "proceed anyway" option, but this has been removed, i.e. you cannot proceed at all, EVEN at your own risk. I want this "proceed anyway" option restored - why was it ever removed? Now, I must battle for 5 mins plus every time to get a public wifi connection. OS: Android KitKat