The switch to choose a region (currently North America or the European Union) can be found here on both the sign-up and login screens here:
If you have any questions about Honeycomb’s regional instances, don’t hesitate to get in touch with Honeycomb Support at support.honeycomb.io
Related Links
Honeycomb launches data residency in Europe
Can I migrate to Honeycomb’s EU instance from the US, or vice versa?