Cloudflare has rolled out a fix in the datacenter causing problems which has resolved these issues for the majority of users. We're still monitoring problems and we'll be following up with Cloudflare to understand how this issue can be avoided in the future.
We're aware of connection issues causing problems for users in the European region. We've identified the problem as an issue with our upstream provider Cloudflare. We're currently working with Cloudflare to mitigate this issues, and we apologize for any inconvenience.