You can change your membership plan from [Change Plan] in [My Page].
1. Select [Starting from my next billing cycle] and press [Next].
2. Select a plan and press [Next].
3. Confirm the details and press [Confirm]
The upgraded plan will be applied from the next billing date.
Payment and coins will be credited on the next billing date.
You can change your membership plan again until the day before your next billing date.