Email has broken solution URL from unicode "®" in puzzle ID encoded UTF-8 vs ASCII

I got a CodinGame email: “Someone replied to your comment!”

When I clicked the link from gmail in chrome, it resolved to something like

Notice the encoded rubik%AE in the URL (which is extended ASCII encoding?). The page never loaded…

I’m pretty sure the correct URL starts with

(which seems like UTF-8 encoded %C2%AE)

The notification from the CodinGame notification box seems to work (except the linked solution doesn’t come up, so maybe it was deleted or taken down).

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