It seems I have similar but slightly different problem.

Typicall I can connect to any free wifi that asks for a user name and password. But I can not connect to a wifi that only / just asks to accepts the use condition.

I tried to connect to a free wifi at the airport but received an error that page cannot be displayed. When tried to connect to the same wifi with my notebook internet explorer I, a page was displayed where I need only to check accept of condition.

I do not understand the reason.

Please help.