sorry, i said they popped in unrelated events to this problem. glass, a missing cobble stone, metal shard, etc.

I checked the tape (in perfect condition), I checked the tube in water (no leak), and I checked the tire (nothing I could see or feel). The tube itself has NO HOLES in it, so those are not the problem.

I wouldn't be surprised if it was my fault while installing them, except the majority of them were changed in shops.

So, the best idea so far, is the valve ring, and as I've said, I loosened it and will see how it goes. If that doesn't work, i don't know. I still don't know what a valve hole boot is.
and thanks again.