Events submitted via Front End form don't display REGISTER button

I noticed that several events on my site don't have the register button displayed.
I've narrowed it down to events submitted via the front end form.

There is a " Custom Registration URL" entered for each of these events

I use the front end event submission form a lot because I can create a new event location on the fly while adding a new event.
Unlike the Admin side where I have to create the new event location on a separate page from the add/edit event page.

Hello Marlon

Events submitted from frontend should still have registration enabled. I don't know why it is not available on your site. Could you please submit a support ticket sending us:

1. Super admin account
2. Link to a sample event submitted in frontend and doesn't have registration enabled

We are going to check to see the reason and guide you to correct it

Regards,

Tuan