Calendar metadata

Facebook recently changed its API, which made sharing event links there so much worse.
For some reason, AIOC completely ignores the SEO metadata info, causing all event links to display just the event name, plus it adds the date in US format (which isn’t what I use on my calendar). And it’s ignoring that all my posts and pages should have the website’s name before post/page titles.
So what I want is this:

Site Name ? Event Title Name

And what I get is this:

Event Title Name (Year-Month-Day)

Can either you guys fix this rewrite, or at least add something in configurations that let us chose how we want event pages titles to be displayed on the metadata?
Thank you.