Can’t add events to Calendar

Is anybody facing issues with Calendar post ios27 upgrade? I’m not able to add recurring events to it. They keep getting deleted! If I create a workout scheduled on Thursday, it isn’t getting added but even the Tuesday’s session is deleted. Instead of the auto-suggestions in the drop-down, I tried creating a new event manually but no dice. I upgraded to 27.2 thinking it’d be fixed but no. Calendar is absolutely useless now. I can’t add anything!!