
Welcome Mauricio!
You say it displays correctly when setting time - if you go back into settings a while later will time have passed?
You understand that the time is only displayed for about 3 seconds when you are wearing or holding the watch and touch the front of the metal bezel(try different spots, that is another issue)? The button to the right(at about the 1 o'clock position) is only for showing the date, e.g 20 for today. If it doesn't respond to the bezel touch, it may just have bad contact between the module and the front of the case - the contact point is a spring that protrudes from the front of the module - don't lose it, it can come out easily.
Take a look at it further and then check back with your progress - others will join in with additional thoughts.