Unable to delete some entries It is weird that I can delete some entires in the app but some I can't. When selecting specific entry to delete, I don't see the option to delete it. I only have "edit entry" and "view entry". In some other entries I have the "delete..." option as well.
Why is that?
You can define different permissions in Craft CMS, if you are not admin its likely someone restricts your access.

Furthermore you can't delete entries in a section of type single - those entries will always exist