On my power supply because i opened it up and the sticker that covers one of the screws is pushed up a little bit.

I already filed an eRMA with Thermaltake and they are sending me a replacement PSU, then i send them my defective one. BUT, i had to enter my credit card info, so if anything is screwy, they can charge me for a new PSU.
Now, i'm pretty sure they will charge me for a new one if they feel like i voided the warranty.
Is there any way to "glue" the sticker back onto the power supply and make it look like i didn't open it up?
I'm thinking about using a little bit of glue from a glue stick and then just pressing down like it was. Hoping that it'll look like it was.
Bad thing is, the sticker is a little bit torn; but i told the guy on the phone that it was torn because i "had trouble putting it in my case at first". He said it's all good though.

Any ideas?