Hi @sunchen1305,   Welcome to TPG Community!   We regret to hear that you've decided to cancel the service.   We've run some test and was able to detect that the service has been dropping. If you could give us a chance to fix the issue, we will arrange a call from one of our Senior technicians to help us improve the service.   Please shoot me a PM with your preferred time and best number to be contacted.   Don't know how to send a PM? Click here.   Kind regards, BasilDV ... View more