More extensive description of the problem would help. Also, the brand and anything else you can find about the floor and the installation could be useful. Do you have extra flooring pieces?

You are moving too much and have shifted and unlocked one of the joints. Look up on YouTube, there are videos that show how to make islands of painters tape, mount wood to it with glue, then use a clamp to pull it back together.

An open space is left between the floor plank installation and the walls for expansion and contraction given the anticipated use. These floor planks click together. They aren't fastened to the subfloor. You can relatively easily lift each plank and unfasten the click connection system. The whole floor can come out and go back together. Using a recommended floor adhesive when you reinstalled the planks would make them less likely to move.

Wrong type of flooring to be used as a dance floor. Need solid wood with a sprung style subfloor. Maple is widely used for the smooth face to slide.