when I go take a look at the wireless networks on my smartphone, tablet or laptop the 5ghz signal is not appearing... Are you sure those devices support 5GHz as well except 2.4GHz? Have you ever...

Did you see "Next" button on that page? If not, provide a screenshot.

It won't. You can still upgrade the beta firmware I mentioned. :)

Jeeprock wrote Thanks Tony but my problem is that the guest network can only have one schedule ! Yeah, I didn't realize that... By the way, thanks for sharing the trick, lol...

There is a beta firmware to solve such a problem and it is for V1. Download it from the link below, upgrade it and have a test. http://tp-link.com/resources/software/TL-WR841HP_V1_141208_Beta.zip

I heard that TP-LINK will release a new utility for all of their powerline devices in the near future. :)