For those with the white iOS screen, I tried putting a list on the home page of my app and the PWA and Android had no problems with it. Just in case it was caused by a list on the home page I added an extra piece of code to not prefetch the home screen as this is handled already. You might see the ugly blue circles on the homescreen, but the rest are fine.
I could not test this on iOS because I do not have an iOS. I will have someone test the new release tomorrow.
I will also start the change to support the linked data pages, but this will work on iOS and Android only, so PWAs will not profit from the change. From there I will submit my change to Adalo to see if they can incorporate it into their proton runner so that PWAs can get faster as well.