Hi @a3zyyz,
Thanks for getting in touch with us!
First let me start by saying we normally reply to thread at least one every 24hrs. But as we don’t work on weekends sometimes threads submitted on Fridays get responded on Mondays. Please take a look at out support policy for more details on this → https://theeventscalendar.com/knowledgebase/what-support-is-provided-for-license-holders/
I want to set up recurring lifetime events. I want to not delete repeated lifetime events. How way to do this?
To do this, you can choose ‘Never’ as the ending date for the recurring event you are setting up:

There are also two settings you might want to tweak in the admin (WP-Admin > Events > Settings > General): Clean up recurring events after and Create recurring events in advance for. Please not that these settings are in place to prevent huge amount of events to be created which might affect the site performance.
I want to be (events calendar) the main interface of the site
Sure it’s possible, take a look at the possible solutions for this → How to Make Your Calendar Your Site’s Home Page
Please let me know if you still have any doubts about those,
Best,
Nico