Radek

I see I didn't notice the title Sensorless Homing So you are using sensorless guidance. you have to fit the jumpers.  You need to enable guidance in Marlin and...

By changing the value #define X_STALL_SENSITIVITY #define Y_STALL_SENSITIVITY you change the sensitivity. you need to find the correct value for your printer

I'm not from BTT. BTT does not answer here. You must contact the dealer to claim a defective part.

Yes, you need to find the correct value between 0 and 255. If the value is low or high, the engine will not spin or hit the frame.. I use...

Do you have a diag jumper fitted?

How are you on the impact sensitivity values? Did you compile the FW with the new value, or did you use the M914 code? https://marlinfw.org/docs/gcode/M914.html

Do you have a diag jumper fitted?

The "All low" message is a problem. It seems that some TMCs have a problem with serial communication with the processor. Send the M122 command and copy the response here....

Do you have the same serial speed set? Did you use the correct coneltor? Have you checked the TFT cable to see if it is faulty?

Yes 2.0.9.3 is an old version, but it should not prevent the display from communicating with the SKR. At most, some functions will not be available.