The T-50 isnt connected, the GT-AX6000 is my main router.
The T-50 doesnt support Bridge mode.
I exchanged my T-50 for the GT-AX6000 on a fiber optic connection.
The GT-AX6000 gives all my devices an IP address but the 2 TP-link switches do not.
Must be a bug in the Firmware.
When i swap back the T-50 both switches get a IP address from the T-50.
Maybe Asus deverlopers team can look into this problem?

The 2 switches, philips hue, and my pc are connected to the GT-AX6000 with a LAN cable the rest of my devices are off, and the GT-AX6000 only finds my pc and the Philips hue.
I think that the GT-AX6000 has a problem with switches that have a user interface.
When i switch OFF the TL-SG105E and turn it back on the GT-AX6000 system log shows this:
Oct 6 14:50:34 kernel: eth4 (Int switch port: 3) (Logical Port: 3) (phyId: 4) Link DOWN.
Oct 6 14:51:21 kernel: eth4 (Int switch port: 3) (Logical Port: 3) (phyId: 4) Link Up at 1000 mbps full duplex