Yes my three accolades have been disappeared and my hub hasn't been published though I submitted around 24 hours before.
It makes me a kind of discouraged I don't know what is wrong. can anyone tell me why?
Some accolades are permanent achievements, and some require constant participation to maintain them.
If your account is "on probation" for having low-quality hubs and/or having repeated TOS violations, all Hubs will have to be manually reviewed by a moderator before they are published and actually go live.
You can help the HubPages community highlight top quality content by ranking this answer up or down.