Hi, I have tried all the methods you mentioned but failed.
When I try to enter http://www.ichef.com.sg/wp-admin
it redirect me to this link https://ichef.com.sg/wp-login.php?redirect_to=https%3A%2F%2Fichef.com.sg%2Fwp-admin%2F&reauth=1
And when I tried http://www.ichef.com.sg/wp-login.php
It show the error ERR_TOO_MANY_REDIRECTS
I have my lazy load unable on my caching plugin. I found the the lazy load in my theme, however I cannot turn it off. In fact, I cannot edit anything under this page.
Link to image: https://ibb.co/vmpBbTB
