I'm using Bootstrap RRC theme and there doesn't seem to be a way to edit the header image of a page from the UI.

Are these only editable directly in the template files?

I have four menu tags for sections on my website's About page. Three work fine and one is broken, and I have no idea why. How can I edit tags? Does it automatically produce tags based on the title of each block? Thanks!

Help pls!

Has anyone set up an image as a Twitter sharecard recently? All the advice online is from a pre-X era, and the metatag for Site URL seems to have disappeared which is causing me issues.