Hiya everyone, I am a very new freshman for KStars

In short : the "INDI server" page is blurred and cannot be selected under the menu bar "Tools" in KStars.
I just start my setup and now is just on the stage of : connecting the mount and guiding camera

my system :
1. Raspberry Pi4B with Ubuntu server 22.04 in LXDE, with KStars/EKos and EQMOD were installed, but not yet PHD2
2. my EQ5-Pro is connected to the RPi4B thru a "USB-TTL-RJ45" cable bypassed the hand control, the cable is DIY in helping of https://www.williamliphotos.com/diy-eqdir
my TTL is : FTDI FT232BL 1328
3. they were also connected to a guiding camera : ZWO ASI 120mm mini mono

I have tried :
1. the EQ5-pro mount by hand control, they work properly, and the version of Synscan is : 04.39.04
2. my TTL works properly with ESP32cam, surely work, and the DIY cable is work well connected also

Actually, I am not sure what should I do for setting them up, where I have some questions:
1. is usb work probably once ubuntu server is installed ? Do you think I need to "wake up" the USB port of the RPi4B first ?
2. It there a sequence for power them up ? for example : mount 1st, then RPi4B ?
3. is there any correct procedure to wake up the "INDI server" thru command line in terminal before start the KStars ?

Thanks to you of you