Shark eats my foundation, and many times, I cannot replace it, as if something is blocking the gap.

You should be able to place down foundations using the hammer.

Its a little bit buggy when the sharks destroys the foundation.

To fix this you can build another foundation next to the hole and it should work again :D (if no space around destroy one of the nearby foundations)

hi, i have a problem: when i try to repair foundations with the hammer it only do the animation and show how many planks will be used for the repair, but the damage counter don´t even move/change.