Amazon Echo Dot setup not working

Setup, Configuration and Use Installation
1

I am trying to set up the echo dot. Went to
192.168.178.47:8080/amazonechocontrol/
after entering the login data, the “confirm login-page” is shown and I get text message on my phone to verify. While clicking on “Accept” the page reloads and I am asked to login again and so on. Any tipps?

I created a .things file with my serial:
Bridge amazonechocontrol:account:account1 “Amazon Account” @ “Accounts” [discoverSmartHome=2, pollingIntervalSmartHomeAlexa=30, pollingIntervalSmartSkills=120]
{
Thing echo echo1 “Alexa” @ “Living Room” [serialNumber=“xxxxx”]
}

and the .items file:
String Echo_Living_Room_TTS "Text to Speech" (Alexa_Living_Room) {channel="amazonechocontrol:echo:account1:echo1:textToSpeech"}

Finally, I have this test-message:
Echo_Living_Room_TTS.sendCommand(‘Hello World’)

2

Is 2FA / two step verification enabled for your amazon account ?
english version: https://www.amazon.com/gp/help/customer/display.html?nodeId=202073820
german version: https://www.amazon.de/gp/help/customer/display.html?nodeId=202013020

2FA / two step verification is required.

3

Thanks! That did the trick.

4

Just noticed. I am getting this error (but it works):
2020-12-01 08:31:49.529 [INFO ] [control.internal.WebSocketConnection] - Web Socket error
java.nio.channels.AsynchronousCloseException: null
at org.eclipse.jetty.client.http.HttpConnectionOverHTTP.close(HttpConnectionOverHTTP.java:181) ~[?:?]
at java.util.ArrayList.forEach(ArrayList.java:1257) [?:1.8.0_222]
at org.eclipse.jetty.client.AbstractConnectionPool.close(AbstractConnectionPool.java:208) [bundleFile:9.4.20.v20190813]
at org.eclipse.jetty.client.DuplexConnectionPool.close(DuplexConnectionPool.java:237) [bundleFile:9.4.20.v20190813]
at org.eclipse.jetty.client.HttpDestination.close(HttpDestination.java:385) [bundleFile:9.4.20.v20190813]
at org.eclipse.jetty.client.HttpClient.doStop(HttpClient.java:260) [bundleFile:9.4.20.v20190813]
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:93) [bundleFile:9.4.20.v20190813]
at org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:180) [bundleFile:9.4.20.v20190813]
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:201) [bundleFile:9.4.20.v20190813]
at org.eclipse.jetty.websocket.client.WebSocketClient.doStop(WebSocketClient.java:371) [bundleFile:9.4.20.v20190813]
at org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:93) [bundleFile:9.4.20.v20190813]
at org.openhab.binding.amazonechocontrol.internal.WebSocketConnection.close(WebSocketConnection.java:159) [bundleFile:?]
at org.openhab.binding.amazonechocontrol.internal.WebSocketConnection$2.run(WebSocketConnection.java:184) [bundleFile:?]
at java.util.TimerThread.mainLoop(Timer.java:555) [?:1.8.0_222]
at java.util.TimerThread.run(Timer.java:505) [?:1.8.0_222]

Ideas?