@martinkbs Ah, I missed it that it's trying to transfer the database. Indeed, postgresql is the internal name. There is no public endpoint. What you have to do is to export the postgresql dump from the old instance and import it into Cloudron by hand. Please see https://docs.cloudron.io/guides/import-postgresql/
@imc67 I've published a new package which sets the getremoteaddrconf now correctly.
Since we only have one reverse proxy, the second setting was not needed in my tests. So this is untouched by default.