Separator spaces don't show

Hi there,

I just installed YOAST (used it before). But the separator and spaces don’t show in the titles. So my titles look like this: PagenameSitename

Already tried to edit the header.php file of the theme I use (Spiritual).

Link to the website: http://tinyurl.com/qb9g3yk

Does anyone have a solution?

Thanks

https://ww.wp.xz.cn/plugins/wordpress-seo/