Steps
Check your browser zoom level (should be 100%)
Reset zoom by pressing Ctrl+0 (or Cmd+0 on Mac)
Refresh the page to reload diagram rendering
Clear your browser cache
Try opening the board in a different browser
Check that you're using the latest browser version
Unhide any hidden diagram elements
If still not working, contact support with a screenshot
Notes
Diagrams should display at 100% browser zoom
Blurry exports are usually due to resolution settings
Hidden elements won't be rendered in exports
Modern browsers render diagrams better than older versions
