I installed ithe sobi2 sef extension and my site wet blank.
It reads "Direct Access to this location is not allowed."
Why?

Hello,

Please make sure that you've installed the correct version of the extension for your JoomSEF. What version of JoomSEF do you use and what version of SOBI2 extension have you installed?

Best regards,
ARTIO Support Team

Ok, I have the right version now, nut I installed version 2 first. How do I delete that one from the Joomla site? It is not deletable from the Extension Manager

Unfortunately you will need to delete it manually using the FTP (or similar) access to your website's files. Navigate to the /components/com_sef/sef_ext directory and delete the com_sobi2.php and com_sobi2.xml files.

Best regards,
ARTIO Support Team