Hey Chihte,
you’re right – custom post types do not automatically get their date archive links in WordPress (which, from my point of view, is rather strange). After much searching I’ve managed to find a work-around for that one, and update your theme files. Now the date link on project meta tags should work as intended. Also corrected the icons in the meta tags.
Thank you for reporting this, I will update the theme as well!
Sincerely,
Andrii / Satori Studio