Switching from (ihc) to (ihc for eu)

I have been using the ihc app to use my RM mini to control my TV, strip lights and various other devices. It’s a fairly essential part of my smart home set up. I’ve been controlling this through my phone and Google home but recently I’ve got an alexa aswel. I’m trying to switch to the eu version because it’s the only type that works with alexa. While logging into the ihc for eu app, i was asked if I had used the app before, i said yes. I was then asked to input a key generated in order to migrate data from the old app, i want to do this. But I don’t know how to find they migrate code in the old app…