Wavlink can be an old version of firmware that is with you. The older version of the device is associated with a signal, but with a slow internet. So to update the device, enter the control panel of the device and make sure the device is in full relationship with Ethernet or WiFi on the device. Find the browser and write 192.168.10.1 in the PC search area. Since it is the IP from Vavalink, it is the way to go to the Wavlink AC1200 Repeater Setup portal. Now you have access to the Wavlink account, finally, check the Firmware Update option, install it on the PC and update the software.