Can’t see added events – Awesome Calendar Review

I’ve loved this calendar sine I installed it last year when I got my new iPhone. It hasn’t given me any trouble, until now. I’m trying to add a doctor appointment for next week and it won’t show up on the calendar. I’ve tried to add it several times and it keeps telling me I have overlapping events. It turns out I do - each time I tried to enter an appointment it kept adding it but it doesn’t show up iy you look at the calendar.
Review by weeble57 on Awesome Calendar.