This plugin automatically adjusts membership payments when users change their subscription level. It is designed for membership-based websites that need precise billing for plan upgrades, downgrades, and changes in billing cycles.

Prorated Payments: Calculates the exact amount a member should pay when switching plans mid-cycle, based on the time remaining in their current billing period and the new plan's price. Delayed Downgrades: When a downgrade results in a credit, the system schedules the level change to occur at the end of the member's prepaid term, allowing them to retain access until their current payment expires. Recurring Date Alignment: Keeps the member's original recurring payment date consistent after an upgrade or downgrade within the same billing period, avoiding confusion and payment date shifts. Multi-Period Support: Handles proration calculations between membership levels with different billing cycles, such as monthly to annual, applying a credit based on unused time. Developer Customization: Provides filters for developers to modify the logic defining a downgrade or to implement custom proration rules for specific site requirements.