Mostly it will count, as they will track the IP of users visiting for referral. And then if they register using the same IP, it will count.
It will count as it is referred to from your link. You will not see any sign once you land on landing page sometimes but if any analytics is installed it will show as the referrer
This usually works with Cookies. Your referral ID is saved in the user's cookie and it's being tracked up to the registration form. Sometimes the website will just record the IP of the user in the database with the referral ID. in each case - only thing matters is the user's first visit to the website with the "/ref?id=1234"
Thank you very much
So if 30 days cookies means that if he sign up under 30 days it will count as my ref right? Thanks