I have a four day visit in DOH in late June, before going on to Singapore. I'm a bit concerned that the Ehteraz app might erroneously display a yellow or gray color after I've left the airport, thus making it impossible for me to get back into the airport to continue my journey a few days later. Of course I understand that if I test positive while I'm there, I can't travel. I'm talking about an incorrect status that might be hard to clear up in time. Anybody have anything to share about their experiences with the app *after* leaving the airport?
(I'm vaccinated and boosted, BTW)