thank you for reply.
I have used the setup wizard, with one Sim-Card in Slot 1. With LAN there were no problems.
I initially left WLAN 2.4 and 5 GHZ on the default settings, but could not detect any network on the phone and tablet.
It was only possible to establish a WLAN connection via the laptop. Afterwards, I could also establish this connection via 5 GHZ on the cell phone and tablet.
However, the WLAN over 2.4 GHZ was not visible on all devices. However, since my navigation device only has the 2.4 GHZ range, this is not sufficient.
Meanwhile, I still changed the labels, but with different endings LTE2.4 and LTE5 and reassigned the network key.
I have also rebooted and restarted the router several times. The troubleshoot file I've sent you by mail.
Thanks for Support, Best regards