Hi! We are sorry for the trouble caused. The images are backed up in TimeTree servers. Please contact us so we can take a closer look at the issue: https://support.timetreeapp.com/hc/zh-tw/articles/205085215
Calendar creator is able to remove members from the shared calendar: https://support.timetreeapp.com/hc/zh-tw/articles/115000038561
Hi! We are sorry for the trouble caused. Can you tell us more details by using the contact form in the app? That way we are able to take a look at your and see if there is a bug. Thank you for your cooperation. Hw to find the contact form: https://support.timetreeapp.com/hc/zh-tw/articles/205085215