Hi @allenhuang24,
Welcome to the community!
Please try to relocate the modem/router and perform a power cycle, let us know how it will go.
In the event that the issue still persist, send us a private message with your account details (Username/Customer ID together with the address on file) also include your best contact number and preferred time and we'll arrange our Technical Team for further test and investigation.
Regards,
The signal strength is only 25% at my home,and the SNR is also bad ,although I test the speed is normal ,but if possible you can do some network optimization to make this strength stronger. Thanks