Hi @VLuong,   Welcome to TPG Community!   We were able to locate your account using your community details and have run some remote test. We've detected a fault on the line, but can't verify if it's internal or external wiring.   Please shoot me a private message with your preferred time and best number to be contacted and I'll arrange a call from our Tech team to look into it further.   Don't know how to send a PM? Click here.   Kind regards, BasilDV ... View more