There is a strange REGDOM-CHANGE message and the network is connected 6 min later:
Code
Apr 11 18:29:09 FSMediaStation wpa_supplicant[426]: wlan0: Trying to associate with 40:2b:50:e9:c9:8d (SSID='FS-WLan' freq=2437 MHz)
Apr 11 18:29:10 FSMediaStation wpa_supplicant[426]: wlan0: CTRL-EVENT-DISCONNECTED bssid=40:2b:50:e9:c9:8d reason=0
Apr 11 18:29:10 FSMediaStation wpa_supplicant[426]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
[...]
Apr 11 18:35:16 FSMediaStation wpa_supplicant[426]: wlan0: Trying to associate with 40:2b:50:e9:c9:8d (SSID='FS-WLan' freq=2437 MHz)
You can try to set the correct regulatory domain via LibreELEC-Settings addon but I don't know if this help.
Do you have an idea how to restart kodi if it cannot establish internet connection.
Not OOTB. Mario77 's service can be modified to check the online status via connmanctl state and reboot after an interactive timeout.