My 2014-15 code of a kid programs can NOT run in new B4A13.
Some pro tried to help me but NOT success in drag-drop images module, and suggested me to install version 11.8 (as reckoning a good for old andnoid target as my project)
If your app will be uploaded to play store, its better you find a way to make it work.
Post your issues in a thread for over 100,00 experts to help you.
I don't think going back to 11.8 will help you. You can't get stuck on that version forever