I have the private key QR code and 15 digit password from the original wallet...but am not sure how to access the BTC with it. According to what I read, as long as you have this and lose your phone you should be alright, so I imagine this would be the same process?

But when I reinstall the wallet, scan this QR code, and enter the password, it tells me my key doesn't match my BTC address (which is a new one bc I reinstalled the APP)