Netatmo- change the accsess token?

Hi, does anyone know if Netatmo has changed the acsess token or if it experices after some time? I suddenly got this error after having it running for ages. :

04:46:56.275 [DEBUG] [.o.b.n.internal.NetatmoBinding:110  ] - Querying Netatmo API
04:46:56.277 [DEBUG] [.o.b.n.internal.NetatmoBinding:370  ] - Request: GetStationsDataRequest[accessToken=5689941269f7405b8cf3b889|2ac600697a213d20587e6d2764837d..]
04:46:56.278 [DEBUG] [.o.b.n.internal.NetatmoBinding:371  ] - Response: null
04:46:56.298 [ERROR] [.service.AbstractActiveService:175  ] - Error while executing background thread Netatmo Refresh Service
java.lang.NullPointerException: null
        at org.openhab.binding.netatmo.internal.NetatmoBinding.processGetStationsData( ~[na:na]
        at org.openhab.binding.netatmo.internal.NetatmoBinding.execute( ~[na:na]
        at org.openhab.core.binding.AbstractActiveBinding$BindingActiveService.execute( ~[na:na]
        at org.openhab.core.service.AbstractActiveService$ ~[na:na]

Maybe I need to upgrade? I am currently running 1.8 of netatmo.