Hello,
I’m sorry that you’re running into this issue, but I’ll be happy to help you figure out what’s going on.
First, can you verify that you have “Event” checked under Events > Settings > Tickets > “Post types that can have tickets”? If not, the form that allows you to create tickets will not appear on events pages.
If this doesn’t allow you to create tickets on events, can you tell me what was going wrong with the event page when you first installed the plugin and which page templates you changed? Did you make these changes directly in the plugin files or do a template override by following the instructions here?