Hello,
Blockly is a library for developers that creates block-based programming environments like the one you're using. It looks like you're having trouble with a specific tool that uses Blockly, rather than a problem with the library itself. I'm not familiar with the product you're using, so you'd need to ask in a support forum dedicated to it.
You might get lucky and someone here can help, but in general this forum is for developers using Blockly to create those applications, and we are best suited for questions on how to use the library. Best of luck,
Maribeth