Hi JessieG, first, to avoid possible mis-understandings: I'm not a TP-Link employee. I'm just a software developer of a (proprietary) Captive Portal for a company selling WLAN hotspots and services....

Why not give away one voucher per user with a session limit for free and later sell remaining vouchers? There is no way to give limited free access for one hour and then charge for each further...

Not sure what you mean. The CPE210 has two 9dBi antennas. You can't change the amplification of a fixed built-in antenna, it's an electrical characteristic of this antenna (note the »i« behind »dBi«).

richsch wrote I have all APs with static IPs, so that's not an issue. I don't really need a running controller; I don't use any such features. Am I correct that I will disable the controller if I...

richsch wrote My problem is that internet connectivity is lost periodically (daily or more often). An EAP goes into provisioning/configuring state if the connection to the controller has been lost...

Please ask in SOHO forums - this is SMB forum for Pharos wireles broadband products.