The current iteration of the Unsupported block isn't very helpful.

Current design:

Proposed design:

• Show the block type name, rather than simply "Unsupported". This will tell the user quickly which blocks are on the canvas and they can move or delete them accordingly
• Add the block type icon as an additional visual cue
• Change styling of text to be system sans-serif and the darker shade ( #2e4453 aka $gray-dark )

(Below: an example of a focused Unsupported block)

Note: If need be, we can tackle the question mark icon separately, but here's how I would expect it to work:

• User taps the (?) icon
• Dialog or sheet opens
• Short message explains that some blocks aren't yet supported, links to more information on a webpage