Header with links and buttons; Action opens a blank page. (Newby question)

Hello everyone,

I’m a complete Softr newby so I’m running into very basic problems.

In a Header block with links and buttons, my “Open Page” actions migrate to blank pages. This happens both in “Preview” mode and after changes are published when the “Open in new tab” link (curved arrow to the right of the subdomain name). See the screenshots and video link at the end.

I saw a post about making sure the block is updated. I think the block is updated. I attempted to check whether the block might need to be updated but I can’t find a “does this block need to be updated” feature. There is no message at the lower right that says a block update is available.

Beyond this, I’m stumped.

Thanks in advance for your help.

Linda

Header action settings:

Google Drive link to video.
This video was obtained after publishing the page from the “Open in new tab” link (curved arrow to the right of the subdomain name).