Just a question : If i use 2 domains on the same ip ( instead of the * wildcard) , the wrong site shows up ( eg website 1 shows up when i want to visit website2 ) With the * wildcard instead of the ip everything works as intended , how can this be fixed as i want to use 20 sites combined over 2 ip's
You can use as many sites on one IP as you need. Just make sure that you select the IP address for all websites, that you enabled auto subdomain www for all sites and that all sites point with a correct dns A-Record to this IP address. By the way, the ispconfig manual describes this in detail.
