Thanks for the updated diagnostic logs.
Based on the debug view logs, there’s no indication of viewer/client connection.
Could you please check the display settings on your primary machine if there’s a detached display while iOS Viewer is showing the display off status?
If there’s a detached display, just attach it by switching to Extension/Mirror mode.
If there’s no detached display, can you please quickly try connecting using spacedesk HTML5 Viewer from your iPad device.
Just open a web browser (e.g. Safari or Google Chrome), then navigate to http://viewer.spacedesk.net/ and try to connect to the IP address of your primary machine.