App Store Review - Blank Page

Im currently having my app reviewed by Apple. Their most recent feedback said my app becomes unresponsive after launch–they attached me a blank white screen. They are using an Ipad Air OS26

On my end, the works perfectly (both on iphone and ipad), and I am using Apple’s very own test flight. Also works perfectly on BubbleGo.

Is this a common problem? Any help would be appreciated.