Real Oak Wood engineered raised florring problem

[adam0303]

2 months ago i fitted some real engineered oak wood floor there are sufficient expansion gaps all the way roung with the correct underlay under it. However near a door where everyone walks in there is a slight gap between 2 planks only about 1mm anyway it seems that this part of the floor is raised only very slightly maybe 1 or 2 mm but as you stand on it you can see and i am wondering

A: how can i flatten it back out
B: can i get anything to fill in the gaps between planks to stop further moisture
C: How can i fry it out if it is damp there