I am using curent version (v10) LDAP intergration and it works fine, as long as you configure it correctly.
Can I assist you in any way, cause each ldap is differently setup it wont be as easy as sharing my setup, but I can try to assist you in getting it to work.
Here are my settings for the fields below the config:
LDAP Search String
sAMAccountName={0}
LDAP First Name Field
cn
LDAP Email Field
mail
LDAP Username Field
sAMAccountName
You can also use an ad browser like ADExplorer or similar to test if all works well, cause thats what I struggled with initially - not know where its failing. I also created a python script for testing the settings files, I can share that if you want.