Airdrops not working

I have my own server and since I made it modded airdrops are not working.
I have the Vote Skip Night plugin (not his exact name), is that the problem?
Please help.

 

what airdrop plugin you use? also in rcon type plugins and paste here what else you have

 

Never mind thanks. The Vote Day plugin blocked it, so I just removed it.
I am not using any plugin for airdrop.

 

Thats why Vote day break it up I suggest you to start using FancyDrop - you will never ever have problem with airdrops or planes, it haves alot of features and cool stuff + the developer is very active and its up-to-date allways