Neither does Replit, and your Replit email has to match your GitHub if you want the two to talk. I guess this is what running and not walking looks like.
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They can get away with not implementing even basic stuff, becauase their core feature is all 99% of the users even care about.
Then again, they have LLMs that can just deflect all "change email" related questions to an FAQ article containing the "wontfix" information...
Perhaps there is some weirdness if you’ve signed up with GitHub. Feel free to email me and we can take a look: amjad@repl.it
But I’ll double check tomorrow and reach out if I find anything worth sharing.