New Method
The new method is this, and sorry for not sharing last night.

If you aren't catching the ghost, wait for it to warp, then swing your net. IMMEDIATELY after it warps. It's like a reset, and now you can catch it.


Old Method

Spoiler

Since I'm a nice person, I'll tell you (I see no leaderboard to bother being #1)

Swing your net directly a little above the candy, if you think you hit the right place and still didn't catch the candy JUST KEEP SWINGING IN THE SAME PLACE EVEN IF THE GHOST IS NOT THERE.

It might be due to lag, but just keep swinging in the same place where you SHOULD have caught the ghost.

Here is a video guide

have fun  

As weird as it sounds, this actually works. Just stand there and keep swinging and you'll get the candy.  

It doesn't work for me. Or i'm doing to wrong.  

UPDATE! Made a guide to catch the candies inside ghosts for those who still don't understand what I wrote.

 

Thank you, it helped a lot!  

help me also, thank you!  

The current method doesn't seem to work at the moment, since there is so much lag due to the playercount, because now the ghosts are warping.  

Hacker  

The new method is this, and sorry for not sharing last night.

If you aren't catching the ghost, wait for it to warp, then swing your net. IMMEDIATELY after it warps. It's like a reset, and now you can catch it.  

I just found out today that if you glitch yourself to off map area (where there's only water), you can sometimes find ghosts floating with candy. So what I do is wait till it disappears and catch the candy quick :0  

Lmao damn  

Do you not study? Seriously...