When using qdslr dashboard, do I have to enable « ADD SHUTTER SPEED TO INTERVAL »
I also set my frame count for example : 2000 and interval 4 s
When I push START button on qdslr LR pro timer stay to initial settings and not starting,
I started my camera setting to: 1/640 ISO 100 and ended due to very high luminosity to 1s ISO 100
Interval is set to 4s on qdslr and 6s on LR pro timer 3
My setup is CANON 5D Mark III - wire between both ANDROID SMARTPHONE and CAMERA
all are working good and preview sample image works very well
Thanks for helping me

When you use the LRT PRO Timer, don't use the interval timer in qDDB!
Just start the timelapse on the LRT PRO Timer. qDDB will listen to the incoming images and do any adjustments.
Check out my video, where I show this on https://lrtimelapse.com/tutorial/advanced