Remove the DNSProxy Configuration from iPhone/iPad

Find and tap Settings in your applications screen.
Then tap Wi-Fi in order to display the Wi-Fi page.
Tap the information icon (i) next to your active Wi-Fi connection.
On the Wi-Fi settings page, tap DNS
Completely erase all numbers written in the DNS field.
Scroll down to the HTTP Proxy section.
Make sure that the HTTP Proxy is set to Off
Tap the home button to save and close the changes.
Open our detection page and check that DNSProxy is no longer active.