Elga IKEA sliding wardrobe - how to level

Hi, maybe somebody who has purchased the Elga IKEA sliding (2 door) wardrobe can offer me some advice. Put together this product today. Last section offers a picture of a spirit level against the wardrobe to see if its all square. Our floors are slightly uneven so on one of the doors there is a one inch gap at the top when closed.

How do I rectify this. Do I put inserts underneath the wardobe until It closes properly The wardrobe itself is put together using raw plugs as connectors plus some large screws so not much room there to make changes to square off hence why I believe the issue is the floor.

Just ring the store and ask them, like it says right at the beginning of the instructions. I've done this twice, once for a kitchen drawer and once for bed slats, and they were able to help me both times. A lot of times your particular problem might be one a lot of people have with that product, or they can ring the relevant department for extra insight if they need to.