This Corvid Forum is for all code related issues on your site.
Your issue is not code related and therefore should be directed through Wix Support either through a support ticket or by calling them directly.
https://support.wix.com/en/about-wix/contacting-wix-support
Or read Wix Support own pages about Google Calendars.
https://support.wix.com/en/article/adding-a-calendar
https://support.wix.com/en/article/adding-and-setting-up-the-google-event-calendar-app
https://support.wix.com/en/article/request-ability-to-sync-two-sites-to-one-google-calendar
https://support.wix.com/en/article/syncing-your-google-calendar-with-wix-bookings
https://support.wix.com/en/article/important-information-about-syncing-google-calendar-with-wix-bookings
https://support.wix.com/en/article/request-syncing-your-wix-bookings-calendar-with-additional-google-calendars-in-the-same-google-account
https://support.wix.com/en/article/request-syncing-wix-bookings-with-additional-calendars-or-other-booking-platforms