Grohe Sense Guard Thing is no longer working getting "Could not load data from API."

i’m using openHAB 4.1.0 Build #3675
since some weeks the sense guard is no longer working, the bridge itself and the sense devices are working:

the sense guard comes up with “Could not load data from API.”

Anything i can do here?

in the log i see:

java.lang.NullPointerException: Cannot invoke "java.util.List.isEmpty()" because "measurementList" is null
        at org.openhab.binding.groheondus.internal.handler.GroheOndusSenseGuardHandler.getLastMeasurement( ~[?:?]
        at org.openhab.binding.groheondus.internal.handler.GroheOndusSenseGuardHandler.updateChannel( ~[?:?]
        at org.openhab.binding.groheondus.internal.handler.GroheOndusSenseGuardHandler.updateChannel( ~[?:?]
        at org.openhab.binding.groheondus.internal.handler.GroheOndusBaseHandler.lambda$1( ~[?:?]
        at java.lang.Iterable.forEach( ~[?:?]
        at org.openhab.binding.groheondus.internal.handler.GroheOndusBaseHandler.updateChannels( ~[?:?]
        at java.util.concurrent.Executors$ ~[?:?]
        at java.util.concurrent.FutureTask.runAndReset( ~[?:?]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker( [?:?]
        at java.util.concurrent.ThreadPoolExecutor$ [?:?]
        at [?:?]

Looks like API was updated and some data fields are shifted/renamed. Please report issue at github.

there seems to be an existing bug, i added a note there. hopefully somebody can have a look. Sad that grohe API isn’t well documented, at least i didn’t find anything.

Any updates on this.