Missing Admin and Register Tabs

Hello it’s been a while since I’ve been in support last time I was at the point where I could provide private access to posts for my subscribers then the hosting company terminated the site agreement. So I was left without a host etc…etc.. The site has recently gone back online and SSL has been implemented once again.

Shifting WordPress doesn’t appear to be that difficult but there’s a couple of small things that have come up along the way which I’d like some clarification on if someone is available.

1. The login/register page tabs have gone missing from http://www.lipcrack.com/blog

I read a few posts, I don’t believe I installed buddypress although I may have taken a look at it for future changes. I did go into General settings and the register new subscribers tab is checked.
A couple of problems that occurred at reinstall required a roll back and although I had it set to not upgrade that seems to have been over ridden by something.

My question : is there an easy way to get those functions register/admin back up and running on the main site page ? eg. is there a code edit that can be made if so what would it be ?

2. In relation to this section
WordPress Address (URL)
Site Address (URL)
Enter the address here if you want your site
home page to be different from your WordPress installation directory.

at the WordPress section I have http://www.lipcrack.com/blog it’s also in the Site address section. I’ve tried deleting it from there because realistically I think it should work without it there (site section)
It won’t allow the delete and keeps reinstalling the address there.
Is that regular should it be doing that ?

3. Currently this code is in the .htaccess file
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /blog/
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /blog/index.php [L]
</IfModule>

I didn’t put it there and wonder what it is doing there. Would that somehow prevent the information in relation to section 1. coming up?

If you could let me know in relation to the above, I’ll quickly go back over how to post some private posts to my sign ups.

thank you

Alena