Help, I can't start my FTB server

My server goes from loading to starting, and after some times directly to offline... some times i get a 0 sec server that i can't reach from client so probably a bug... what can I do? please, help me

EDIT: I don't think I can reupload my world, because is bigger then 100 mb and I think upload size is limited

Eavatum is what i use to log to server option.

In game is Hominatum

reinstall will delete my world?

What does exactly do reinstall button?

As I said I don't think I can reupload my world, because is bigger then 100 mb and I think upload size is limited

OK then. I will go for the Hard way

Thanks for the help