I know this is not the right Forum but maybe someone can help me.
EEZ Studio does not have a Forum The LVGL Forum sucks.
With Ver 8.x it was quit easy
I use PlatformIO and in the Folder src where the main.cpp is I just copy all files in the ui Folder and the magic starts. With version 9.x I miss something. No Arduino Project with LVGL 9.x