Board Thread:Game Discussion/@comment-27798333-20160709010251/@comment-27962837-20160709074204

Recompletion bonuses are ONLY awarded when you hit 25%, 50%, 75% or 100% AGAIN, so if you are at 76%, then undoing a time trial by closing and reopening the game, you will fall below the 75% mark, around 74%, so if you redo it, you will reach 76% again, earning yourself a recompletion bonus.

But if you are at 87%, redoing a time trial won't earn you anything, as you haven't gone below a quarter mark.

If you've already done what Hawkize said, then this might be the problem