To transfer projects between devices use Import and Export Project functions. Export Project Tap file icon and choose Export Project. Dialog window will appear on screen, select iCloud Drive and desired folder (for example Downloads) and tap Open.  All necessary files (media files and project file) will be exported to desired folder in a subfolder with the name of your project. Import Project Tap file icon and choose Import Project. Dialog window will appear on screen, select iCloud Drive and browse to a folder where you exported your project. Select subfolder with the name of your project and tap Open.