I am able to see the page okay as well - both logged in and anonymous state.
Experience league have sections that are internal to the company as well. It could be that due to some bug some of them might have been crawled by search engines.
Another possibility is, do you have a digital media adobe ID ? It could be that that ID might be conflicting and put you to a scenario where its not anonymous or DX ID. I haven't tested it out, but just thinking loud.
Do you have any more example pages where its not working for you ?