My moderators have access to the admin panel! Note that I didn't give them access to it. I checked the group permissions 5 times, and nothing there was causing it.
Why is this happening? Is there any way to fix it?
they can see admin panel with all options in it?or just seeing admin button!some permissions fall in admin account so they should see admin button.
They can see pretty much everything other than the ban functions.
Can you post a screenshot of what they can see?
A screenshot of the regular members permissions from the admin center would also help :).
Reports are also a useful tool to see which members have access to which areas: Generate Reports (http://docs.simplemachines.org/index.php?topic=151.0)