@robincruseo Thanks for your sharing. You guys can read this article to get some updates also. https://community.tp-link.com/en/home/forum/topic/173376 Best regards.

@DJDave Try to login to the Tether app or the cloud website with your cloud account first; Note: You can use the Tether app and bound it to the cloud account to manage this router. Or try to reboot...

@lottiemb Thanks for your explanation. So the TL-MR6400 works fine but you cannot make wifi calling; while as my knowledge, wifi calling makes you call out or text message out with smart phone...

@RaZik Thanks for your explanation. Below is a driver for the T2U nano you can install and test its performance. http://support.tp-link.com/d/c47bc56da5/ Still the same, please tell us the bandwidth...

@Taserface What about the normal network activities? Like web browsing? And you can show us a screenshot of speed test when you download games from steam. Good day.

@Tvdw Definitely sure.