Default instructions to install the library is to use Composer. In the case of a hosting that doesn't allow or enable SSH / CLI access, the option is to manually download and extract the library. By following the 7.x.2.x versions installation instructions, I extracted the library in /core/vendor/facebook/php-sdk-v4 and /vendor/facebook/php-sdk-v4. However, we are still unable to run the module: Simple FB Connect requires Facebook PHP SDK library. Make sure the library is installed via Composer. Check README.txt for installation instructions.