Payments and Reports All payments and reports due hereunder shall be made on or before the day such payments and reports are due. Nothing in this paragraph shall be construed to extend the expiration of the primary term hereof. Oil royalty payments and supporting documents shall be submitted prior to the last day of the month following each month's sale of production, and gas royalty payments and supporting documents shall be submitted prior to the last day of the second month following each month's sale of production. All payments shall be made by cash, check, certified check, or money order. Payment having restrictions, qualifications, or encumbrances of any kind whatsoever shall not be accepted by Lessor. A penalty for a late payment shall be charged as set forth in the PENALTIES paragraph herein.