Their status page reports all green, but they have confirmed the issue in replies on Twitter.
https://x.com/TomAnthonySEO/status/2112440392591278217
https://www.reddit.com/r/Revolut/comments/1xaklod/is_revolut_down/
https://www.reddit.com/r/Revolut/comments/1xakl5m/na_revolut_seems_to_be_down/
https://x.com/Mister_J_91/status/2112427993624981921
https://x.com/bygerach/status/2112435316724236390
Revolut uses Google Cloud: https://cloud.google.com/customers/revolut
They've been expanding hard across Europe recently, this might dent people's confidence in these new fangled neobanks a bit...
From their last filings, they have 70+ million individual customers, 850k business customers. Highest in the UK: about 13 million, so nearly 20% of the population. Ouch.