Create a plugin Skip/Bypass rule for the Cart66 ecommerce shopping cart plugin in BPS Custom Code.
1. Copy the Cart66 ecommerce shopping cart plugin skip/bypass rule below to this BPS Root Custom Code text box: CUSTOM CODE PLUGIN/THEME SKIP/BYPASS RULES
2. Click the Save Root Custom Code button.
3. Go to the BPS Security Modes page and click the Root Folder BulletProof Mode Activate button.
# Cart66 plugin skip/bypass rule
RewriteCond %{QUERY_STRING} cart66AjaxCartRequests=(.*) [NC]
RewriteRule . - [S=13]