Meeteor is a web-based software so you'll need to be connected to the Internet to use the functionalities. Everything in Meeteor is auto-saved, and you can refer to the 'saving' notice at the top of the page. Double check it shows 'all changes saved' before leaving that page.
If your connection is lost when you're on the page, you'll find the offline notice at the top of the Meeteor Web app. We recommend you to copy