Hi Guido,
Thanks for your interest in our plugins. If you are already using WooCommerce then your best option for selling tickets is WooCommerce Tickets. It uses WooCommerce for the transactions, so you wouldn’t need to add or learn another commerce engine.
There are Brazilian Portuguese translations for The Events Calendar, Events Calendar PRO, and WooCommerce Tickets. However, they are outdated. I would love to have you help update them- you could even get free licenses in exchange. If you are interested, check out the Getting Started post in our Translations forum where you’ll find the instructions and files you need.
Best,
Leah