Mass is mass
I am build out of protons, neutrons and electrons. All of those have a certain mass. If you add up the masses of all the protons, neutrons and electrons in my body you will get my mass.
If electrons get heavier so will my body.
You can call me stupid if you want to, but that is the way it is.
Weight is actually a force indeed. You can calculate your weight by using the formula F = m * g
Where m is your mass and g the gravitational acceleration of the thing you are living on. In our case earth.
The word mass is often used wrong for weight. If I say that my weight is 58 kilos I am wrong. My mass is 58 kilos which makes my weight 58 * 9.8 newton.
Perhaps you were mixing those 2 up when you replied to me?