Steem Upvote: Why my upvote value is Nil

Hello Steemians ,

I am facing a tragic situation about upvote.
Last upvote value was $0.02.

But from last week I have not any upvote value.
Where is my upvote power is 100%. And bandwidth also I have.

Firstly ,I thought that may be some any updating Of steem.

But later I realize It's not,

My question is ,

Why is it happend ?
Can I will back my upvote value?

I have about $8.00 steem power. Which is power down at present, because I upset.

Anyone can see my wallet and wallet history.

Please anyone sluggest me what to do now.

Please Help Me.

Reetabrata