Re: Accounts not creating Permissions, and Site URL issues
Ah, Bluehost 
1. If you are running the multisite version of WordPress, on the super admin’s options there is a setting for default profile. Alternatively, there are lots of plugins that control this sort of setting on. I use a couple of role management plugins on a few sites but I’m not sure what’s best. Hopefully someone can recommend one.
2. If you disable BuddyPress, and register an account on the site (via WordPress), do you receive the email? If you don’t, it is either ending up in your email’s spam or your server is not configured to send emails correctly. However, since you’re on Bluehost, have a look at the bottom of this message first.
3. That site URL setting should match the URL of your site. I’m not sure what you mean by “pointed url”, but you should probably only change it if you have moved the site from one_domain.com to another_domain.com.
4. Depends on definition of “easy”; they are in the theme’s header.php.
Bluehost: We have seen issues with Bluehost previously. I do not know if all the issues still apply, but in general:
1) I suggest that you do not use simplescripts to install (or even WordPress).
2) RE: your email problem. I suggest you search this site for “Bluehost” as we have had lots of discussion around it previously but, from memory, https://wordpress.org/extend/plugins/mail-from/ might fix the problem (it has to be a valid email account, so you may need to create it first).
