Hi, Maxime.
In our forums we keep our threads focused on just one issue at a time to ensure we fully answer each of your questions/issues. Please keep this in mind for the future and start a new thread for your additional questions from this thread. Thanks for your understanding, and I’ll answer only your first question.
You might try playing with this setting: wp-admin > Events > Settings > Display tab > “Events template” option — to see if changing it makes things work better for you.
If that doesn’t work, I’d suggest asking your theme author how-to for the tribe_events custom post type archive view.
If you have follow-up questions about this topic, please provide a link to your site’s calendar.
Thanks!