Hi Louis,
1- To add the license you will need our WP Factory Helper plugin. You just need to add it to get automatic updates, when available.
2- You can use shortcodes in the messages, for example, for WPML translations:
[alg_wc_oma_translate lang="DE"]Text for DE[/alg_wc_oma_translate][alg_wc_oma_translate lang="NL"]Text for NL[/alg_wc_oma_translate][alg_wc_oma_translate not_lang="DE,NL"]Text for other languages[/alg_wc_oma_translate]
3- If you are referring to our Currency options, then each currency need to be set with the own currency. E.g.:
ILS – 30
USD – 9.3
Let me know if it helps 😉