although it says it's up to date, most files aren't backed up. It used to work fine, stopped for reasons never explained to me (email support just responds every few days with basic generic info that is unrelated to my actual situation, which is very frustrating and this is a paid account), so I followed their instructions and restarted the backup. It says it's up to date, but my PC folder has hundreds or thousands more that do not appear in the dropbo folder. any advice? thank you.