after upgrade wordpress system so far, i found some very in-actual activities: 1. wordpress added 4 users, i don’t know; included admin, administrator, pluginsuser. so i decided to delete all user and recreated mine. 2. plugin that i didn’t install. 3. plugin updated, in the manner i think it shouldnot
so now my wordpress has no plugin at all. so something will not be the same sorry for that now.