Hi Bill SCHONFELDER here are the new blocks for OLED you need, so as Oscar Ferruz said we are working on the release of a new version for Otto Blockly the 1.4.1

But if you wanna test now the new file is here and do these steps https://github.com/OttoDIY/blockly/blob/master/www/blocs%26generateurs/oled.js
1. Right click on "Raw" save link as... (that will download just that file)
2. Use that file to replace the one installed in your computer
3. Press F5 in Otto Blockly, that will update the blocks

Let me know how it goes