1: with problem use preset
I tried backing up the website and running it on localhost and it worked fine so I am sure the problem is that the hosting cannot read the file as I said above.
2: with probelm front-end
You need to turn on the preview and edit it to your liking with the configuration below before showing the front-end, so you will see the interface in the back-end before the show to the front-end.
Please try to again