[SOLVED] Innogy binding - loss of communication, no automatic recovery

I notice since about 2 weeks that communication to Innogy stops every now and then. It seems that Innogy is working on their backend still. I need to stop start openhab to get things moving again for some hours.
Anybody else with this behaviour?

My Version is
openhab-binding-innogysmarthome 2.5.6

I pasted 2 sample error log messages below

2020-07-16 22:01:08.788 [WARN ] [internal.handler.InnogyBridgeHandler] - Error starting websocket.
java.util.concurrent.ExecutionException: java.io.EOFException: HttpConnectionOverHTTP@c51fe6::DecryptedEndPoint@fb970e{api.services-smarthome.de/51.124.73.211:443<->/192.168.123.12:48784,OPEN,fill=-,flush=-,to=103/600000}
at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) ~[?:1.8.0_201]
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895) ~[?:1.8.0_201]
at org.openhab.binding.innogysmarthome.internal.InnogyWebSocket.start(InnogyWebSocket.java:84) ~[?:?]
at org.openhab.binding.innogysmarthome.internal.handler.InnogyBridgeHandler.startWebsocket(InnogyBridgeHandler.java:272) ~[?:?]
at org.openhab.binding.innogysmarthome.internal.handler.InnogyBridgeHandler.startClient(InnogyBridgeHandler.java:247) ~[?:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_201]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_201]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_201]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_201]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_201]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_201]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]

java.util.concurrent.ExecutionException: org.eclipse.jetty.websocket.api.UpgradeException: Failed to upgrade to websocket: Unexpected HTTP Response Status Code: 503 Service Unavailable
at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) ~[?:1.8.0_201]
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895) ~[?:1.8.0_201]
at org.openhab.binding.innogysmarthome.internal.InnogyWebSocket.start(InnogyWebSocket.java:84) ~[?:?]
at org.openhab.binding.innogysmarthome.internal.handler.InnogyBridgeHandler.startWebsocket(InnogyBridgeHandler.java:272) ~[?:?]
at org.openhab.binding.innogysmarthome.internal.handler.InnogyBridgeHandler.startClient(InnogyBridgeHandler.java:247) ~[?:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_201]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_201]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_201]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_201]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_201]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_201]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]

seems there is again problems with the backend. Also the innogy app is out of service…
never ever a cloud based smart home system again…