Dashboard with Android Wallpanel always logout after some hours (http ban)


I’m using different dashboards at my house with Android Wallpanel to show HA dashboard. This is working till think 3 month ago. Now I can login and config Wallpanel to show my HA dashboard and after running 12 hours I get something like this a the log:

[homeassistant.components.http.ban] Login attempt or request with invalid authentication from Dashboard_Kueche.smcbs.local (192.168.xx.xx). Requested URL: '/api/websocket'. (Mozilla/5.0 (Linux; Android 12; Lenovo TB-J616F Build/SP1A.210812.016; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/113.0.5672.131 Safari/537.36)

and then the Wallpanel dashboard is logged out. I’m using the internal IP with port 8123 and a internal only user at this dashboards. I cleared everything and reinstall Wallpaneld etc. without a solution. The dashbaord is working fine some hours or a day and then it’s logged out. Whats the problem and what can I do?

This config is working for years and user credentials are ok and I could manually login again without s issue.