Everyone on here, and on Kodular, has already told you that you do not need an extension for this, everything is possible with blocks. You say that everything you have tried does not work, but you have not submitted your blocks/code to the forum in order to find out why. They work for others, so why not for you?
Once again:
POSTing a file to a php server
Upload Any File To Google Drive with AI2
Follow the guides, try them out if aia projects are provided, then come back if you can't get either to work, showing your blocks and code.
Also
HOWTO: Create a Google Apps Script Web App bound to a Spreadsheet
may help..