bad integration with newest versions

With updating to the newer versions (3.4.5 and above), the design of mails and invoices looks shredded. Also the “Tracking Widget customizer” looks like a customizer integration, but don′t work at all. Settings and translations don′t get saved and access to this “customizer” is only possible through the AST-settings page instead of the wp-customizer as intended. It seems this plugin wants to much after all the good time and I′m looking for another/better one.