Just wanted to make sure that the issue/problem was not related to the BPS Pro Plugin Firewall.
What is causing the block/403 error is the round bracket coding characters/parenthesis (googlev3:geocoder) in the Request URI string.
Edit your root .htaccess file using the BPS .htaccess file editor on the Edit/Upload/Download tab page and remove/delete the round brackets from this security filter below in your root .htaccess file.
RewriteCond %{QUERY_STRING} ^.*(\(|\)|<|>|%3c|%3e).* [NC,OR]
round bracket code characters removed
RewriteCond %{QUERY_STRING} ^.*(<|>|%3c|%3e).* [NC,OR]