Why can't I sell my rub?

[fav]

you can't pay the fees from your wallet at the moment (planned).

and the rub fee pool is empty, you or someone else has to fill it up first

[yvv]

Error message: Fee pool balance of '0 BTS' is less than the 10.00019 BTS required to convert 2.2098 RUB

I have enough balance to pay this fee, what should I do to be able to sell?