There are no limits to the number of deposits and cashout withdrawals you are able to make. You can only have one pending (i.e. requested but not processed) withdrawal at any one time. However you are always free to cancel a cashout request, any time prior to its being processed, and then do a new request to cashout for a different amount. To cancel a pending cashout withdrawal simply go to the “Journal” table at the bottom of the “Your Account” page and click on “Cancel”.