Ability to remove field after free trial and downgrading to personal plan

Free trial ended, downgraded to personal plan, had a custom field on one of my Calendars, now I’m locked out of Calendar. Went to remove field - no option. Wasted time looking everywhere, went to Asana’s AI chatbot - it says I need to contact Sales to give me access to the Calendar so I can manually remove the field and resume work. Unnecessary amount of steps. A waste of my time and the Sales team time.