Problem with add a Device

When adding a device from the Loriot server to myDevices, there was a problem that if you specify EU2 server, then an error is returned Bad Request. Then I transferred the Lora device to EU1 server Loriot and added to myDevices a device specifying EU1 server and it worked, but data from the Loriot server does not appear, while data from my Lora device comes to the Loriot server. What could be the problem?