Ajax Tag Board 4 phpbb3

Hey guys!
First of all sry for my english...i'm german.

I installed the board on my forum like the installation guide said.
Then there was the problem that the board rećonized me just as a guest.
But i was logged in!

So I installed it again. It Didn't helped.

Now I want to remove it, but i don't know how to do it.
I put the backup files on my server and removed the files that i copied from the root directory in the board folder.
And i also removed the MySql tables.

But on my Forum Index there's still the tag board. It says somethign with "You don't have the permissions for entering this Area!".
So my Question is how to completly remove it?
If i remove it i can install it again...

so help me.
Marcel

Please help me!
I want this mod...