Category problem – please help – urgent

Hi,
i am having a problem with my two wordpress sites from last two days, you can see on my sites, flprojects.info and newsplate.com. categories vanished by themselves. when i checked in categories section of admin panel there was nothing but navigation for number of categories was there even in wpomatic there was nothing. please help me cuz this is becoming a huge trouble for me and i also want to add that both of my sites are hosted with same reseller.