It is normal for the text to change back. It resets the template to the original state before the next image is put it.
Just to confirm, you have 2 issue going on right now, correct?
1. It won’t save.
2. It won’t replace the text.
We need to work on 1 issue at a time. Please uncheck the use CSV checkbox so it doesn’t even try to replace the text. Also remove the stop on finished checkbox. Then try to run a batch without using the CSV.
Without using the CSV, does it now save the images?