Hi there Ashlee,
Thanks for getting in touch and sorry to hear you are having some troubles setting up our plugins!
First of all let me say that event if you remove the plugin from the site the events data is kept in the database so when you re-install the plugins, it will be there for you.
Regarding your licenses keys please take a look at this article: Finding and inputting your license key. Basically after plugin activation the license key fields should be available in WP-Admin > Events > Settings > Licenses, one input for each product license.
I’m not sure about the conflict you are having with Event Tickets Plus, as I don’t see you have an active license for it (at least not in this account). Can you clarify on that?
Best,
Nico