I've been struggling to get the targeted results in under 10 seconds.. I found guides on this game but they're for four corners. I was wondering if there are tips/strategies on achieving this, most people seems to get it already. Thank you!

not really. Just practice. Play several games in a row without sending a score so you can just keep playing it and only send the score if you do it under 10s. Maybe, if you can, play on a different device - that can make a lot of difference too.

Last thing, keep your eye peeled on the text that tells you which spindle it wants the blocks on. So you don't waste any time getting started.