Oh man, I had this exact problem a while back. To disable tproxy on your iPad, go to Settings > Wi-Fi, tap the "i" next to your network, and scroll to "Configure Proxy." If it’s set to "Manual," just switch it to "Off."
If that doesn’t work, try resetting your network settings (Settings > General > Reset > Reset Network Settings). Just be aware it’ll wipe saved Wi-Fi passwords, so maybe save those first.
If that doesn’t work, try resetting your network settings (Settings > General > Reset > Reset Network Settings). Just be aware it’ll wipe saved Wi-Fi passwords, so maybe save those first.