I bought a "Wall repair compound" and let "father" to repair it..
He took the bucket to workroom and repair the wall a few times..(maybe 5~6) and the wall is almost repaired.
But!! The last time he repair it, the "Wall repair compound"is disappear and the wall is broken again(like I never let anybody to repair it)

Then I bought 2 "Wall repair compound" again in a few days but they repair it less and less times.
The compound is disappear and the wall is still broken..

So I can't get the trophy.

is it a bug?? or how can I repair it??