We have occasionally seen an issue regarding Chrome as default browser on iOS where App Store links show up as a blank screen. This means it only affects a few per cent of iOS users.
This seems to be a bug in how Chrome retrieves data from the App Store, and seems to only affect apps with regional availability where you are currently in a region where the app is unavailable.
If you are having problems due to this issue, we recommend making your app available in more regions, or even globally available.