LOGBLOCK HELP PLEASE HELP ME!! Please Read!!

Hello i run a dedicated Minecraft server called Claw Gaming. I used to run BigBrother but due to it no longer being updated, it will no longer work on my server. Yes, i have tried, when i did, it overloaded my Database and my memory on my server causing it to crash. Things i have tried: YouTube setup videos. The actual setup on LogBlocks plugin page. Niether have gotten me anywhere from this:

/lb
Usage: /lb help
I do /lb help
i get the same message: Usage: /lb help


Please.. For the love of god.. HELP ME.
IP: mc.clawgaming.com