I have a new MacBook Pro running High Sierra (10.13.2) and installed current versions of Pages and Numbers. But I need also the old versions (from iWork 9 I think) with mail merge support. I had those installed in parallel on the former Mac also using MacOS 10.13 but that one is broken (main board failure).
Is there any official way to download the installer for iWork still running on current machines? I only found update packages on apple support so far.