Macbook rocking diagonally
Hi, I bought a new Macbook air m1 and didn't use it for like 3 weeks (it just layed unused on my shelf). A week or two ago I've started using it and noticed it's rocking diagonally between back-right and front-left corners. I didn't use it enough to even leave the tiniest of a scratch on it and even the stuff at the shop I bought it in said it looks brand new and that they can't find any reason why would it rock. What my question is will it affect the longevity of the device? It's not bad enough for it to be bothersome and I'm a student so I need my laptop at basically all times and would prefer not to have to give it up for two or three weeks as it's being repaired. Will apple refuse to repair it if I don't report it to them now and it'll get worse in the future? Thx for help (I'm pretty new to apple products and after-sales service so I'll be gratefull for any help)
MacBook Air (M1, 2020)