[Server crashing]

This has been happening allot. I will just be playing on my server and "joining world" "The server you were on went down..." I have Tried uninstalling plugins, not building quickly, everything i can think of. If anyone can help I would greatly appreciate it. I really need this server to work. most of my friends live a good distance away and i don't have the money for realms. If this server host dose not work i don't know what to do.

[Not receving vote credits.]

I loged on today to start my server and saw "Vote daily for 25 credits!" so i clicked it and voted. Afterward i waited for about 30+ minutes thinking it's just lag time "it will catch up". but it has been to long for lag. If some one can help with that it would be greatly appreciated.