Hi Stacey,
Thanks for reaching out to us!
If you have a PRO or a Community Events license, could you then log in with the account you have used to purchase our plugin? That way, you could get the premium support.
To answer your question, “Welcome to Libero” might be your theme’s default page title. You could hide it by using some css.
For “color blue” are you referring to the submit button? This one can also be changed via css. If you reach our Premium Help Desk, then we could give you a snippet to fix your website 🙂
Regarding our aggregator tool, you would need indeed to buy a license for Event Aggregator.
I hope this helps,
Cheers,
Jeremy