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
C:\OttoBlockly\www\blocs&generateurs
3. Press F5 in Otto Blockly, that will update the blocks

Let me know how it goes