Did you already received your repaired nuc @jb4711 and test things out? At first i had the same problems as @Pascal_S but now the appliances are not getting an update a hour instead of one day after restarting the openhab service.
When i go to http://IP_OF_OPENHAB:PORT/homeconnectlogs there are only logs from the 14 of July, After pressing clear log, no new logs are being created.
If the appliances are running and i reboot the server or restart the service i get the following error messages in the main log:
2020-08-13 06:57:38.269 [WARN ] [internal.client.HomeConnectApiClient] - [API_ERROR SIEMENS-SN678X36TE-68A40E0ED6BB] PUT 409 https://api.home-connect.com/api/homeappliances/SIEMENS-SN678X36TE-68A40E0ED6BB/programs/active
2020-08-13 06:57:38.271 [WARN ] [dler.AbstractHomeConnectThingHandler] - [HANDLER SIEMENS-SN678X36TE-68A40E0ED6BB] Could not handle command start. API communication problem! error: Communication error! response code: 409, message: , body: {
2020-08-13 06:57:43.079 [WARN ] [internal.client.HomeConnectApiClient] - [API_ERROR SIEMENS-SN678X36TE-68A40E0ED6BB] PUT 409 https://api.home-connect.com/api/homeappliances/SIEMENS-SN678X36TE-68A40E0ED6BB/programs/active
2020-08-13 06:57:43.080 [WARN ] [dler.AbstractHomeConnectThingHandler] - [HANDLER SIEMENS-SN678X36TE-68A40E0ED6BB] Could not handle command start. API communication problem! error: Communication error! response code: 409, message: , body: {
2020-08-13 06:57:44.732 [WARN ] [internal.client.HomeConnectApiClient] - [API_ERROR SIEMENS-SN678X36TE-68A40E0ED6BB] DELETE 409 https://api.home-connect.com/api/homeappliances/SIEMENS-SN678X36TE-68A40E0ED6BB/programs/active
2020-08-13 06:57:44.733 [WARN ] [dler.AbstractHomeConnectThingHandler] - [HANDLER SIEMENS-SN678X36TE-68A40E0ED6BB] Could not handle command stop. API communication problem! error: Communication error! response code: 409, message: , body: {
2020-08-13 06:57:46.943 [WARN ] [internal.client.HomeConnectApiClient] - [API_ERROR SIEMENS-SN678X36TE-68A40E0ED6BB] PUT 409 https://api.home-connect.com/api/homeappliances/SIEMENS-SN678X36TE-68A40E0ED6BB/programs/active
2020-08-13 06:57:46.944 [WARN ] [dler.AbstractHomeConnectThingHandler] - [HANDLER SIEMENS-SN678X36TE-68A40E0ED6BB] Could not handle command start. API communication problem! error: Communication error! response code: 409, message: , body: {