Grid adjustions in laptop is affecting smartphone grid as well

I would like to clarify my issue:

  1. I set 3x2 grid in smart phone .
  2. Moving to the next break point (751-1000) , the grid disappeared.
  3. Trying to apply the same grid 3x2 for tablet.
  4. The grid in smart phone is going crazy
  5. Need to fix my design in smart phone all over again.
  6. thanks