The v1 firmware on the skr is likely marlin and estlcam does not talk to marlin firmware. To get it to work, you would need to get a different binary file for the skr, but according to this post there isnt likely one available:
The v1 firmware on the skr is likely marlin and estlcam does not talk to marlin firmware. To get it to work, you would need to get a different binary file for the skr, but according to this post there isnt likely one available: