Solution for this problem: The Following solution will help. if not solved,Email us for new one or refund.
Solution 1: Change the USB Port and test it.
Solutoin2: Setting the wifi adapter work in 5g only.
1.right-click on start (Windows buttom-left)
2.Click "Network Connections"
3.Click "change adapter options"
4.Right-click on the "Realtek 8812BU
NOTE:Please click “statues” and check network speed.
If the speed is 866Mbps, it’s connected to 5G network. If the speed is 300 or 144Mbps, it’s connected to 2.4G network.
7.Click " Advanced"
8.click " wireless mode"
9.Select "Value": IEEE802.11a/n/ac (this means 5G only).
(Auto:means the windows choose 2g or 5g by siginal itself)
Solution 3:Updated the driver to new version
You can update the driver.
Online Setup Support
1.Please Download online setup software and install it, Double-click the software.
2.After you Double-click ,The software New ID will come. Please send the software ID to our Email:firstname.lastname@example.org
or you send ID to our website online chat on the bottom-right corner(chat with us)
(The below ID is just sample) we will do the online setup for you as soon as possible.
You can also use the teamveiwer .Here is the teamvewer download link: www.teamviewer.com After you Install the teamviewer ,
The software New ID and Password will come. Please send the software ID and Password to our email: email@example.com
or you send us from our website online chat(www.ninepluswifi.com), we will do the online setup for you as soon as possible.
Online chat: www.ninepluswifi.com