Castor has separate databases for user accounts for each region. We have the following regions:

• Americas (US) region for our US server, which is accessible at us.castoredc.com
• European (EU) region for our EU and UK servers, which are accessible at data.castoredc.com and uk.castoredc.com
• Australian (AU) region for AU servers is accessible at au.castoredc.com

This means that you would need to have three sets of credentials if you would like to access servers in all three regions. If you have access to studies in different regions, you have to log into the correct region to access the studies. The EU and UK servers which are located in the same region share the credentials, so you can login with the same email and password into the EU and UK server.

If you change your password in one region, it will only be changed for that single region. If you wish to use the same password to login to servers in both regions, you will have to login and update your password twice - once in each region. Check here how to reset your password.

If you are a user with access to studies on a server in a single region, but will need access to a study on a server in a different region, you need to register a separate account for the second region.