I have informed that I will check in late, but when I arrived at the hotel there was no receptionist on standby, I contacted the hotel but was told to wait, the hotel can only be contacted via WA, not by phone. In the chat, the hotel only asked whether we had paid or not, because we had paid on the app, was it because we had paid on the app that we were not served well, and after being told to wait, the hotel's cellphone could not be contacted.