@Skinet I did the same thing on my controller, and it's the same as your test. I guess this is because "Type" is set to "Limited Online Users" and the value is 1, so only one online device can be used at the same time.

For test4, "Duration Type" is Client Duration. When a device uses the code and the duration exceeds the value of "Duration", the network is disconnected. However, the code can be used again on any device, including the device that used the code last time. So it doesn't expire and is still in "in use" status.

For test3, as "Duration Type" is "Voucher Duration", the network will be disconnected if a certain device uses the code and the duration exceeds the value of "Duration". The code will expire because it has already been used and cannot be used by any other device. It is not clear why it also shows "In use", theoretically it should be "expired".

  @DIDADI 

I did further testing on #1 and I noticed the iphone I used for testing would still connect to the SSID even after the duration expired but no internet connection. I have to power cycle my phone in order to go to the login page again.

I hope TPlink woukd fix these issues in the next firmware release.

I would also like a feature where the time used or time remaining is available in the dashboard or anywhere in the hotspot management page.