Okay, first things first. Go to the schOPE product page and then hold down the shift key and then click the page reload button on your web browser. After that, try your download again. Wordfence is thinking you’ve been hammering the download button a bunch and that may be triggering the block. It’s also possible that another user behind the same proxy or coming from the same IP address is doing something like that.
If you get the same error again after shift-reloading, just wait for a few hours and try again. The block should remove itself after a while.
If THAT doesn’t fix it, go to our support page and open a ticket - we’ll find an alternate way to get the installer to you.