Many users who attempted to log in to the ChatGPT website this morning were met with an error message: "Please unblock challenges.cloudflare.com to proceed."
At Downdetector, hundreds of users were similarly reporting problems, starting around 6:30 a.m. ET and then ramping up significantly throughout the morning. (Disclosure: Downdetector is owned by Ziff Davis, the same parent company as Mashable.)
And at 7:12 a.m. ET, OpenAI confirmed on a status page that it was investigating a problem with some of its websites. A later update on the OpenAI website reads, "We have confirmed that the incident is caused by an issue with one of our third-party service providers. We will provide updates as they become available."
The issue is connected to the ongoing Cloudflare outage. ChatGPT is one of

Mashable Technology
Breitbart News
Vogue
Space War
Fast Company Technology
New York Post
Detroit News
Santa Maria Times Local
Associated Press US News
AlterNet