MONTHLY PLAN ADD-ON TERMS: Add-Ons available only for monthly plans. For existing accounts, Recurring Add-Ons take effect when new monthly plan cycle begins & remain on accounts until removed. Accounts must have sufficient funds for combined monthly plan and Recurring Add-On & incidentals, if any, by monthly plan payment date or services will be interrupted. One Month Exp Add-Ons take effect on purchase date & expire one month from purchase date. If purchase date is on 30th and following month ends on 31st, expiration date is at end of date on 30th of next calendar month. If purchase date occurs on Jan 29th - 31st, expiration date is Feb. 28th. For NEW accounts, both Add-Ons take effect immediately.