XF 1.3 Problem after changing IP adres

After my host changed my ip, they discovered that innodb was corrupted and a lot of sites I own, got corrupted databases. Then they used a backup from 3 days earlier and every one worked, only a xenforo forum didn't. This is the name of my community: www.forumpiece.com
You can see images like this: http://forumpiece.com/likes8.png
But you cannot access forum pages like this: http://www.forumpiece.com/help/trophies or the index page.
I don't know what to do!
Yes very simple but it was very difficult to solve because I couldn't see the difference.
On the file config.php I tried earlier to change the name localhost to the new IP adres. I figured it out that it was a mistake, because it always stays as localhost and it doesn't matter what your ip address is. Then I wrote localhost again but this way:
$config['db']['host'] = ‘localhost;
After 3 or 4 hours I noticed that after localhost there wasn't any apostrophe. so when I did, it didn't solved at all. Because before localhost there was a quotation mark instead of a normal apostrophe and that is what solved the problem. I only noticed the difference between the quotation mark and the apostrophe when I saw it on directadmin otherwise I wouldn't have noticed it at all.