Emailed calendar invitations go the wrong calendar (Zoho vs Google)

Emailed calendar invitations go the wrong calendar (Zoho vs Google)

My primary calendar is a Google calendar.

Events that I have been invited to via email automatically get added to my Zoho calendar, but I want them to go on my Google calendar (both calendars use the same Zoho-based email address).

Is there a way to move those events to my Google calendar so that all of my events are on the same calendar?

Can I disable the Zoho calendar in some way? I never wanted that app in the first place...