Ok so I got a refurbished phone from a third party. Will Apple still fix it if I pay for it?

Alright imma just get straight to the point. So a couple months ago I got a refurbished phone from a third party store under 13 month warranty. It was working fine, I dropped it a few times maybe and it cracked once. A couple months after that the screen started sort of lifting from the back of the phone. Since then it hasn't been the same. I think it's been exposed to rain water as well. BUT anyways I think it should still be fixed under my warranty because the screen lifting was apparently the battery swelling. But when I went into a random tech store they said the warranty is void the minute the phone is cracked and also because of the water exposure (which is bs). I'm still definitely going to pursue getting it fixed under warranty but I also wanted to know if I could get it looked at at an actual Apple certified store? Since it's technically not a certified Apple product?