HA Cloud Nabu Casa no response from remote control

Hello community,

my first post. So I hope that I provide all the necessary information.

I finally updated my HA Docker version to 2023.2.3 after a year. Since the update two days ago, I can no longer use the remote control of Homeasssistant Cloud. I have already restarted HA + Raspberry several times. Here is the log I get:

2023-02-10 14:34:42.704 WARNING (SyncWorker_3) [homeassistant.loader] We found a custom integration rpi_gpio which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant
2023-02-10 14:34:53.385 WARNING (MainThread) [homeassistant.components.sensor] Entity sensor.pv_ertrag (<class 'homeassistant.components.mqtt.sensor.MqttSensor'>) is using state class 'measurement' which is impossible considering device class ('energy') it is using; expected None or one of 'total', 'total_increasing'; Please update your configuration if your entity is manually configured, otherwise create a bug report at https://github.com/home-assistant/core/issues?q=is%3Aopen+is%3Aissue+label%3A%22integration%3A+mqtt%22
2023-02-10 14:34:54.673 ERROR (MainThread) [snitun.client.client_peer] Challenge/Response error with SniTun server (0 bytes read on a total of 32 expected bytes)
2023-02-10 14:34:54.677 ERROR (MainThread) [hass_nabucasa.remote] Connection problem to snitun server
2023-02-10 14:35:52.862 WARNING (MainThread) [homeassistant.components.websocket_api.http.connection] [2785478856] Disconnected: Did not receive auth message within 10 seconds
2023-02-10 14:37:18.938 WARNING (MainThread) [homeassistant.components.mqtt.client] Can't decode payload b'2\xc3' on MPPT1/Watt with encoding utf-8 (for <Job HassJobType.Callback <function MqttSensor._prepare_subscribe_topics.<locals>.message_received at 0xa585b2b0>>)
2023-02-10 14:37:28.925 ERROR (MainThread) [snitun.multiplexer.core] Ping fails, no response from peer
2023-02-10 14:39:18.901 WARNING (MainThread) [homeassistant.components.mqtt.client] Can't decode payload b'2\xc4' on MPPT1/Watt with encoding utf-8 (for <Job HassJobType.Callback <function MqttSensor._prepare_subscribe_topics.<locals>.message_received at 0xa585b2b0>>)
2023-02-10 14:39:50.150 ERROR (MainThread) [snitun.multiplexer.core] Ping fails, no response from peer
2023-02-10 14:40:17.227 WARNING (MainThread) [homeassistant.components.websocket_api.http.connection] [2671171736] Disconnected: Did not receive auth message within 10 seconds
2023-02-10 14:42:16.350 ERROR (MainThread) [snitun.multiplexer.core] Ping fails, no response from peer
2023-02-10 14:49:31.718 WARNING (MainThread) [homeassistant.components.websocket_api.http.connection] [2670076256] Disconnected: Did not receive auth message within 10 seconds
2023-02-10 14:50:59.418 ERROR (MainThread) [snitun.multiplexer.core] Ping fails, no response from peer

It seems that there are some MQTT issues which i need to take care about as well. But my main problem is Home Assistant Cloud.

The login to Nabu Casa does work, i disconnected the integration and all linked devices and reconnected, just to see that there is no response when trying to load the remote control (it’s activated in the settings of HA Cloud).

I see there is no response for

homeassistant.components.websocket_api.http.connection

and

[snitun.client.client_peer] Challenge/Response error with SniTun server (0 bytes read on a total of 32 expected bytes)
2023-02-10 14:34:54.677 ERROR (MainThread) [hass_nabucasa.remote] Connection problem to snitun server

Do you have any idea why i get these issues in the log? The router settings & internet did not change since the update.

Edit: The integration with Google Home does work - i reconnected it - and i can control my switches. It’s only the remote control that does not work.