There appears to still be a technical issue. When I click on Instant Buy, enter an amount, and click "Get Quote", it pops up an alert (with a delightfully scary red pattern) that says "Socket not connected
Sorry, our notification socket isn't connected yet. Try again in a few seconds!".
I've tried half-a-dozen times over the course of ten or so minutes -- always the same result.
Regards,
Zooko