Is it possible to fix some voids in the laminate flooring I just installed?
Is your floor a floating floor? Is your sub floor concrete or plywood? I know it's a pain in the you know what. However if you want the floor to last and you want it done right you must take op the floor. Some might say just take it up to the point of the low spot. However if the low spot is bad enough to cause noticeable movement you should take it all up and float the floor if its concrete. If the floor is plywood you would either need to replace the warped sheet possibly try and screw down the pucker if there is sufficient floor joist under the swell. I feel your pain. I just installed flooring in two rooms in our home. The second room had a crack in the slab that appeared after the house was leveled. That was a chore all on its on. Good luck to you.
if you can get under the floor, like in the basement, you can shim it up from there, if not i think the epoxy might mess up the floor and might even void the warrenty
I'm afraid there's not much you can do except tear up the floor and re do it.