Can you elaborate more? just suddenly? or when it goes to sleep?

It may have to do when Canon dslr live view is active. It seems that when that's active it triggers it.
It's always suddenly.
What do you mean with goes to sleep?
I deactivated sleep on my iPad and in stellarmate os.

Did you also update to latest INDI + KStars ?

I'm using the latest beta.
But I've had this problem with also the stable versions.
Tried with hotspot and wifi connections but it made no difference.

Alright we will check. I just checked with my Canon 600D. I added multiple sequences, each with different ISOs (count=5). First sequence ran to 4/5 images then stopped. For some reason, the camera just didn't want to image. I had to cycle power to camera and restart the profile. The 2nd attempt went smoothly and I was able to capture the whole sequence. But I didn't trigger live view during this time.. I'll try that next time I run the DSLR.

Thx for checking Jasem!
The thing is that ekos and gstars keep running on the rpi with no problems at all when Stellarmate app disconnects.
I checked that because i also have a monitor connected to the rpi so i can see that all is fine on the rpi.

Me too. Im an iOS user.