On the box with only one romex(4 wires) when both the red and black are attached to the travelers the lights stay dimmed but you can't do anything. When the red is attached to a traveler and the...

Then my other side looks like this which was the old spot that the 3 way worked on for the overhead lights in the kitchen

@Bethel.8009 the one box only has 1 romex cable with 4 wires pic here

Any help would be appreciated greatly I do not understand why these lights are flickering after the installation