One standard trick for diagnosing problems (such as finding which single module is the cause of a problem, and finding which modules interact badly) has always been to simply disable either all or selected modules until one has found the problem.
Just got a new site, my first in some time. After much finagling I was able to install drupal 8 using MOJO installer. In an email after the install it just said that to login user: admin with no password. It won't accept a blank password. Moreover, when I try and reset the password to either admin or my email, it says password has been sent, but I don't receive anything.
I searched the site and the only answer I see is to reset it via sql. Been a while since I worked on a database, and doesn't seem like that needs to be the first thing doing with a new installation.
I started designing my website (Drupal 8) with the plan to have nested menus in the navbar. The problem is I created a sub-theme of Bootstrap 3, which has removed submenus from my understanding. This is a quote I found on SO quoting the author Mark Otto on the issue
"Submenus just don't have much of a place on the web right now, especially the mobile web. They will be removed with 3.0"