secureline VPN IOS refuse to connect on public wifi

Hello
My (free trial) Secureline VPN on IOS (last version on an Iphone 6) works fine on my private Wifi (at home) and with 4G (LTE) but refuse to connect (automatically and manually, to any destination) when I’m on a public wifi (airport, mall, hotel, …).
I thought Secureline was designed to protect me on a public wifi connection … ???
thanks for an answer …
PS : I have a License for a Windows 10 version.

There are cases when SecureLine on iOS cannot connect to some Wi-Fis, e.g. there is a blocking captive portal (you need to accept terms in the browser first or VPN is actively blocked on the network, etc.). To help us understand what’s happening in your case, please send us a support ticket directly from the app’s Settings → Help → Contact Support. This will collect also necessary logs and information needed for troubleshooting.