What should I do if the gold character of Hangzhou health code is gone?

Try refreshing yourself.

Generally speaking, the health code of friends who have finished two shots of vaccine will appear in Phnom Penh. If there is no Phnom Penh, you can see Phnom Penh in two days. The official in Phnom Penh did not reply: it was still caused by excessive visits. At present, relevant departments are stepping up debugging, and you can try to refresh it many times.