The entire experience of attempting to register vaccine status is unclear. Instructions are not clear. After looking at youtube to figure out how to register, I have a qr code but no registration number and my passport is still not registered in Al Hosn. Make your registration process and app instructions clear for tourist or do not require an app. It is easier just to carry a vaccination card and pcr test results. Instructions and app are not useful or usable. Horrible rollout and app.WTH