The Unique ID is, as the name itself says, a unique set of numbers associated to each account. This number is generated when you first create your Miniclip account and it remains the same while the account is active, serving as an identification of the user. This also helps us track any accounts, which will ultimately make sure we can more quickly and more efficiently help you resolve your issues :)
Here's how you find it on www.miniclip.com:
1. Login to your Miniclip account
2. Click on your Username just next to the Search Bar which will bring a drop down Menu and Click on View Profile
3. You are now on your profile page, if you look at the link to the page you will see a few numbers, that's your Miniclip ID Number
That is it! Once you have that, always make sure to include it in your emails to Support :)
We will appreciate it greatly!