Thanks for posting in the Apple Support Communities happyswann,
You may need to login, or join to access internet from captive networks. The following steps may help:
How to join a captive Wi-Fi network
1: Tap Settings > Wi-Fi.
2: Tap the name of the network, then wait for a login screen to appear. Or tap the More Info button next to the network's name, then tap Join Network.
3: If asked, enter a user name and password, enter an email address, or acknowledge terms and conditions.
After you log in, you should be able to access the internet. Fees and other charges might apply when you use captive Wi-Fi networks. Contact the network provider for more information.
You can find these steps, along with additional information that may be useful on the following page: Use captive Wi-Fi networks on your iPhone or iPad
Cheers!