When using Content Recommendations it is important to use the correct portal for the region that the account is located. Using the incorrect page on login can result in a "the client does not exist in this region" error like the following being thrown.

EMEA -https://manager.emea01.idio.episerver.net/login

US -https://manager.usea01.idio.episerver.net/login

Canada -https://manager.caea01.idio.episerver.net/login

APAC -https://manager.apac01.idio.episerver.net/login

Legacy Clients (AWS) -https://manager.idio.co/login