There might be an old version of the Wavlink firmware which you are up with. The sign of the old version of the device is connected but with slow internet. So to update the device enter the control panel of the device and make sure the device is in full connection with the Ethernet or WiFi to the device. Locate the browser and type 192.168.10.1 in the search field of the PC. This is the path to the Wavlink AC1200 repeater setup portal since it is the Wavlink IP. You may now access your Wavlink account. Lastly, look for the firmware update option, install it on your computer, and update the program.