It seems like you're using a platform that supports dynamic placeholders, but the exact one for the event website link isn't clear. Since the tokens you've tried didn't work, I suggest checking the platform's documentation or support for the correct placeholder. It could be something like {{event.url}}, {{event.page_url}}, or similar. If there's an event-specific placeholder, it will usually refer directly to the event's details or page link. If you're still stuck, reaching out to the platform's support team might help clarify which placeholder to use.

Hope this helps!

Did you ever find a solution to this yet?  I am looking for the same thing.  I want to display a link to the event details/registration on the website as we have event specific information on it.