Did you check the IMPORTANT data in the drive? it contains the correct installation.
Did the name of the folder just like in the IMPORTANT data?
Did you restart the ygopro app after changing/adding? (You can restart by holding the home button[or some other button. Different from device to device but mostly home], and "throwing" the app out. Now start it by the icon again and check again)
Otherwise: please delete the .obbs made by me, run the app after restart, let the autoloader download the old pictures and replace them again with my one. after that, restart again and check.
when you don't get the new cards after all of that:
could you please call me your device?