Hi! I'm sorry the last update has caused some trouble, I have put a small explanation in the add-on description.

If you already have an export of the list from the old version, you can import that file in version 5.2.4.

If not, you can downgrade first to version 2.0.1 to make an export there (your old channels should still be there). Then you can import it again in version 5.2.4.