Hi

​@Janine Wright 

I see that when the user is login as guest,it  might to be viewing only,so I expect that login as customers and by accounts, this give him/her to change the board.

With respect

Hi ​@Janine Wright, thanks for reaching out!

The flip action only works for editors on a board. View-only users aren’t able to interact with the flip function, which is why it’s not working when you share the board in “View only” mode. If you’d like customers to be able to flip the cards, you’d need to allow them editor access. 

But, If you’d like customers to be able to flip the cards without changing the board content, here are a couple of options:

• Share as Commenter: Give customers commenter access. Commenters can interact with certain objects (like flip cards) but cannot move or edit board content.

• Export Alternative: If interaction isn’t critical, you could export the board content (e.g., as PDF or image) for them to review, though this won’t support flipping.

I’d recommend trying the Commenter role, as that’s the closest balance between interaction and content protection.