Few questions before purchase

good afternoon I need your help.

I have installed the free version in order to get to know the plugin, i did some tests however it didn’t let me translate or add certain texts per language though WPML, it doesn’t let me choose which language to add certain text either so i want to know what’s going wrong there

On another question i also want to know what does the plugin page mean with “10 usd per 200 sales”

Thank you for the help, best regards