@Jordyvdburg Did you factory reset the extender? If you can't see the router's wifi network when setting up the extender, please try the following suggestions: 1. Confirm the extender is close to the...

@Fcalkas Hello, please tell us more details then we can help. What's the model number and hardware version of your adapter? What's the operating system of your PC? What troubleshooting have you done...

@Pansa Thanks for the info. Maybe the windows update cause this issue. You can try to plug the adapter into another USB port, or reinstall the driver below to give it a go....

@johnBarnes123 @HabibUllah Hello, what's the operating system of your computer? What's the adapter's hardware version? Please refer to the instruction below to do some troubleshooting, then tell us...

@Frankification Thanks for the info. Glad to know you can connect to the 5G wifi now. For the speed issue, you can try to customize the wireless settings of the main router, like the wireless channel...

@TopSecretGamer Hi, glad to hear that it works, congrats.^_^ If need any further help, just let us know. Good day