Q: How to Auto-Login on wifi captive pages?

I want to auto login a wifi captive page. The wifi doesn't have a password. But it guides you to a captive page to log in. To connect to the wifi, the captive page ask me to:

1. Fill User
2. Fill Password
3. Check a agree term box
4. Click on button

Every time the phone goes to sleep it disconnects from wifi, so I must login again when I wake up the phone.

How do I avoid login every time?

User and password are already saved in the password, I can autofill when I press to complete de data.

This are the steps I follow every time to connect to wifi:

0. wake up the iPhone 6s

1. Go to preferences
2. Go to wifi (i can step this with force touch, but just avoid one step).
3. Select the wifi.
4. Wait until the captive page appears (like 8 seconds).
5. Click on user box
6. Select auto fill
7. Check the agree box.
8. Press the button to connect.
9. Wait until the Welcome page appears (waite 1second).
10. Press "ok"

HOW DO I AVOID THIS? Remember its every time I wake up mi phone.