Hi @qdwerbao ,
We're sad to know that you're having issues with the service. We'd like to take this opportunity to turn around your experience. We're able to locate the account and ran an initial test.
The result shows a possible line fault affecting the service not to work. We'll raise this to our Engineering Team for further test and investigation, assessment may take 24-48hrs updates will be provided via SMS or Phone call.
We apologise for any inconvenience.