I had hoped there would be a work-around or a few suggestions over 4 days.

I have tried renaming the 5GHz SSID as suggested in one of the posts, however the adapter still does not show the 5GHz SSID. My iPhone is able to view and connect to it just fine.
The entire point of purchasing the device is defeated.

Are there no TP-Link employees who monitor forums? I cannot contact their customer care since their work hours coincide with mine 10:00AM to 6:00PM, Monday to Saturday.

There are no official solutions from TP-Link, I've called their tech support line and the solutions provided were utterly useless:

1. Uninstall and Reinstall drivers - Tried it did not work
2. Plug it into a different port - Also did not work
3. Try this adapter with a different computer - Do they expect me to have multiple computers at home? And even if it does work with a different system how does that help me?

The device uses a MT7610U chipset which upon further research has issues with 5Ghz and Windows 10. Windows 10 picks the wrong drivers for this card and I cant manually override them either because TP-Link provides a setup.exe and no *.INF files to manually set the right driver.
I will be returning mine and buying an adapter from a different company, because support here is a joke.

If any admin from TP-Link is reading this, thanks for nothing and I will not be buying any TP-Link products in the future.

TL;DR
T2UH Windows 10 driver does not work with 5GHz networks, TP-Link support has no fixes.

I'm on Windows 10 Pro 1709. Installed driver from CD, connected to my router and no 5GHz. I did not intall the WPS utility since I was already connected okay.
Installed latest driver from TP-Link website - same result. Downloaded the drivers from Mediatek's site - same result.

Installed drivers from CD again, then WPS utility and connected (again) via WPS. And there was the 5GHz finally.

Let us know if this worked for you.

i have this problems too. sometimes can't searching wifi. need to restart my computer.

@Abhijit 

 

hi, I have found a solution. you must download the utility enter the router set a fixed channel and do not use the automatic one. manually install the t2uh drivers, enter the device manager (windows) set value # 0 for 5ghz, set channel mode 5g only. connect through the tp link utility. I hope it helps