To connect your domain to your wix site you will first need to log in to the Client area.
Then access the DNS management page.
Then you will need to open in another tab Wix pointing method and log into your Wix account.
Follow step 1 to Change to pointing then in step 2 it will give you the required CNAME and A records.
Go back to your Cheaper Domains tab and add the CNAME and A records that were listed in step 2 and make sure to click the save changes button at the bottom of the DNS record list.
Then return to Wix and complete step 3.