I have a suggestion and I was wondering if it is possible to change the sliding Sensor Sensitivity scale from a slide to change the number to something that you can enter manually? Or a scroll thru of numbers.
I ask this only because it can be very difficult to change the number even by 1 using the sliding dot.
Yes it is a little bit tricky, but normaly it works.
Hint: Let’s say you wanna set 91 and currently set it to 89 or 90.
Changing it from 89/90 to 91 will be very fiddly. So just move the dot back to 30 or something and then raise it back up to 91 while not taking off the finger until you get it to 91.
Then , may take some time, it should work.
Sure, could be easier. Thats true.
One of my plenty eufy cam sets got installed by a 80+ y.o. friend of mine. I wonder anyway how fit he is with the eufy cam and its app. But he could also not get this done as his fingers are too big and not sensitive enough anymore in his age. So i set up his system and when he needs something to change, its my job.
In short and/or other words:
The eufy cam and its app is not made for everyone 
