Did you close blockland before downloading them?If not, just restart blockland.
Did you turn them on in the add-ons list?
Your probably just another noob from roblox saying tools are add-ons.You download them then save them not to blockland but to a temporary file and then have the blockland add-ons page running behind it and click and hold on the add-on and move it to the blockland folder.Check out the add-ons section on how to use them you tard.
there is too a edit button