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You can put your points for sell at any time.
as you know, points will be used for getting upvote from other users.
in this case, your points spent on getting upvotes not for selling in market.
you said you lost your points, and I said, you got it in your posts :)

So, by selling my points I'm getting the SBD in upvote immediately?
And what would happen if I bought points?

no. no.
Buy selling points you will receive SBD in your steem account.
You must pay SBD for buying points.

So, as I said I made a sell order but didn't receive my SBD in my account. My points just dissappeared.

your points not dissappeared.
I checked logs.
you got an upvote before creating any sell order and that upvote used that points.
I'm sure Market is good and safe enough for all users.
we had ~20 Trade in market, and all of them was without error.
Don't worry. I can say, you won't lose any Points in Steemfollower.

very strange how that happened immediately I tried to sell lol.


more than 2 SBDthat upvote was from @spacehd :)