Minor Improvement:

1. Custom Fields 1 to 4 are now included in the Payment Distribution Report and are hidden by default, consistent with other reports.

Bug Fixes:

1. Invoice Item Group 1 and 2 Reports are now optimized to prevent database spikes during generation.
2. Error when setting up Google Calendar in legacy mode is now resolved.
3. The Calendar API error is no longer triggered when deleting tickets that were scheduled before Google Calendar integration was disabled.
4. Additional checks now prevent incorrect billing of prorated charges when subscriber packages are added via API.