Optimized Birthday Credit Sending Date for Leap & Regular Years 🎂

To handle differences between regular and leap years, SHOPLINE now adjusts birthday credit sending for members born on February 29:

• Send on the birthday date
  If selected, credits for members born on February 29 are sent early on February 28 in regular years.

• Send on the 1st of the birthday month
  If selected, credits for members born on February 29 are sent on February 1, leap year or not.

Each member can receive birthday credits only once a year. If you modify the birthday credit sending date:

• From "Birthday date" → "1st of birthday month"
  The system calculates based on the last redemption date + 12 months (adjusted for time zone). The resulting month must be on or before the current month.

• From "1st of birthday month" → "Birthday date"
  The system calculates based on the last redemption date + 12 months (adjusted for time zone). The resulting date must be on or before the current date.