Some earned cash may be listed as "pending" if it's earned from apps, offers, and surveys that require additional verification time. Cash earned by your referrals may also be classed as "pending" for the same reasons.
The remaining time required for your cash is shown in the activity section of your account: https://featurepoints.com/account/activity/pending
Unfortunately, we're not able to decrease the amount of time required for pending cash. Once the cash is no longer pending, it will be ready to use to purchase rewards.