Bug Login issue without www. included

[JBlaze]

I started getting this problem after I installed dbseo with new htaccess.

My issue: I'm logged into my forum and my account stays logged in if I include www. in the front of the domain nanme.
However, If I take off www. and just write mydomain.com. I get logged out or just not logged in at all. However I am still logged in if I add www. in the right of the domain again.

I am using the htaccess provided from original download + here's my cookie settings

Screenshot by Lightshot

 

[Fillip H.]

This is an issue with the Cookie Domain setting in your vBulletin Options. I also recommend using .htaccess to redirect to either www or non-www.

 

[JBlaze]

could you provide me with the edit I need to make to my .htaccess file?

 

[Fillip H.]

Do you want with or without www?