Do you have the V1.1 manual ? In V1.1 manual the page 33 is about focus stacking. What is "closest -> no limit" and "no limit -> closest" ? does it means the focus direction? Yes, it is the direction. What about steps? I was trying different values: 5, 10, 30, 500, 20000 and 3000...
Please try and long press the 'Netowrk' button and enter the 192.168.1.1 and finally press 'Connect'
Does this work when you connected your DSLR to MR3020 with USB and turn it on?
If it show the image then the image file should be there also as it loads from file.
What is in the filed 'Folder for local images' in qDslrDashboard settings?