Worksheet update issues

When ever I try and make a change on the spreadsheet (from my work computer) I get an "Oops, permissions on the file have changed, we need to reload" message. The spreadsheet reloads and my input disappears. This happens every time I try and enter something. At home I get a submit button, but I'm not seeing that at work. Is there something I need to do? Has anyone else had this problem?