For customers who are part of Data Hosting in Europe, you will need to modify your app's configuration in order to configure the iOS Messenger to point to your EU workspace.
See our iOS Installation guidelines here.
For customers using Expo you can modify your info.plist by adding the following as a to the info.plist secion of your app.json file.
"infoPlist": {
"IntercomEURegion": "true"
},See our Android Installation guidelines here.