Blackbaud does not provide FTP access to the WordPress sites that we manage. This is because we use a PCI secure host which requires a dedicated tunnel to access. Blackbaud is the only network that can access our servers and we cannot allow any other entity to have access to the security. This includes the Hosting, FTP credentials, and WordPress admin credentials.
Any page design or content creation would be limited to what the site administrator has access to through the WP admin console.