Ask @ecency about Boosting

Hello @ecency
Yesterday, I boosted my post Sharing My Battle with DRAGON SUMMONER with 250 ESTM points.

But, I didn't get upvote of @ecency or refund now.
Because, I don't know.
So, Can you explain me about it.

Why do you Upvote my post?
Is your voting power low?
If it is, why do you refund me?
Doesn't your program refund system?

Please,

Tin Aung Soe