Need help in setting up daisy chained 2KTL L1

[j1gg3]

Hi,
I have HA running with an additional wifi dongle and been able to configure and connect to SUN2000-6KTL-M1 via 192.168.200.1 and Port 6607. Software is the latest one installed V100R001C00SPC168, same applies to 2KTL L1.
I configured the second inverter via RS connection, it is visible and has the Slave ID 2 ( I checked once again within Fusion2000 App)

The integration isn't able to find the 2KTL inverter. I tried to delete the entire integration, ran discovery with AUTO, 2,1 or 1,2 0,2, 2,0 IDs.

Somehow it is weird, the discovery with AUTO or by just adding ID 0 and having the ip 192.168.200.1 set, will lead to find the 6KTL including the Power Meter.
As a workaround I've added the 2KTL via the SDongle and the ID 2. Wondering why Inverter is being found with Slave 0