Pushover API not reachable

Hi there,

I am using openHabian 3.4.4 on Raspi 4 and I am trying to get pushover to work. I have assigned the user and api key to the configuration but it seems as if the pushover api on api.pushover.net cannot be reached. The log contains these lines:

2023-07-22 11:21:30.368 [INFO ] [ab.event.ThingStatusInfoChangedEvent] - Thing 'pushover:pushover-account:2d62e104b1' changed from UNINITIALIZED to INITIALIZING
2023-07-22 11:21:30.376 [INFO ] [ab.event.ThingStatusInfoChangedEvent] - Thing 'pushover:pushover-account:2d62e104b1' changed from INITIALIZING to UNKNOWN
2023-07-22 11:21:40.382 [INFO ] [ab.event.ThingStatusInfoChangedEvent] - Thing 'pushover:pushover-account:2d62e104b1' changed from UNKNOWN to OFFLINE (CONFIGURATION_ERROR): Total timeout 10000 ms elapsed
2023-07-22 11:26:07.879 [INFO ] [ab.event.ThingStatusInfoChangedEvent] - Thing 'pushover:pushover-account:2d62e104b1' changed from OFFLINE (CONFIGURATION_ERROR): Total timeout 10000 ms elapsed to UNKNOWN
2023-07-22 11:26:07.889 [INFO ] [ab.event.ThingStatusInfoChangedEvent] - Thing 'pushover:pushover-account:2d62e104b1' changed from UNKNOWN to OFFLINE (CONFIGURATION_ERROR): java.net.UnknownHostException: api.pushover.net

I have noticed that I am also not able to ping that api from the console. Also, other pings, such as to google.com do not work. I do get the error message “ping: google.com: Temporary failure in name resolution”.

Any help would be highly appreciated.

Thanks