If it's really a hardware version 2.0 switch, it should be safe. See http://www.tp-link.com/at/faq-46.html

Falls Du den AP TL-WA801 direkt am Speedport betreibst und an dem AP die Default-Zugangsdaten (oder leicht erratbare nutzt), kann das durchaus möglich sein. Aber wer - wenn nicht Du oder höchstens...

No, you can't do that without VLANs. You would need two or more Ethernet ports/cables to be able to assign different SSIDs to different ports/cables. That's exactly what VLANs do: they assign kind of...

What should the AP do what it does not when using same SSID? An AP is not a router. Can't imagine what you mean with "real roaming". Do you rather mean "hand-over" as the newer EAPs do, i.e. kicking...

No, that doesn't help. I always use Private Browsing, even for regular web browsing and the behavior is the same as with Private Browsing disabled. BTW, you don't need to actually login at the second...

It's best to only use IP addresses for configuration instead of a web address. You might try 192.168.0.1 if 192.168.1.1 does not work. Make sure your PC has a static IP address within the subnet,...