1, probably because the system is under repair, resulting in no health code Phnom Penh;
2. According to the official answer, it is because there are too many visitors, and the relevant departments are currently carrying out maintenance and adjustment;
3. Perhaps it is the reason for the network delay. As long as you are a successful user, it will appear a few days after the system test;
4. This may also happen if the mobile phone number of the user's vaccination times is different from the mobile phone number registered when you obtained the health code.