Blink Account not set in bridge

Hi Community,
since some days my open hab can’t set a connection with my blink account.
Following error message come in my blink bridge thing: “Blink Account not set in bridge”.

java.io.IOException: Blink Account not set in bridge

	at org.openhab.binding.blink.internal.handler.AccountHandler.getCameraState(AccountHandler.java:323) ~[?:?]

	at org.openhab.binding.blink.internal.handler.AccountHandler.getTemperature(AccountHandler.java:379) ~[?:?]

	at org.openhab.binding.blink.internal.handler.CameraHandler.handleHomescreenUpdate(CameraHandler.java:197) ~[?:?]

	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) ~[?:?]

	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[?:?]

	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[?:?]

	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[?:?]

	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[?:?]

	at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) ~[?:?]

	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[?:?]

	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[?:?]

	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) ~[?:?]

	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) ~[?:?]

	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]

	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) ~[?:?]

	at org.openhab.binding.blink.internal.handler.AccountHandler.fireHomescreenUpdate(AccountHandler.java:391) ~[?:?]

	at org.openhab.binding.blink.internal.handler.AccountHandler.loadDevices(AccountHandler.java:275) ~[?:?]

	at org.openhab.binding.blink.internal.handler.AccountHandler.refreshState(AccountHandler.java:254) ~[?:?]

	at org.openhab.binding.blink.internal.handler.AccountHandler.lambda$1(AccountHandler.java:258) ~[?:?]

	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]

	at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]

	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) [?:?]

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]

	at java.lang.Thread.run(Thread.java:829) [?:?]

By trying to login my bridge, I don’t receive any verification PIN. Only by delete and recreate of blink bridge thing is a verification possible. After some times its go again lost, no additional verification with the same thing is possible - I don’t receive any verification PIN.

Do you have any Idea, what the problem it can be?
many thanks in advance, Sergo