Hi @olived
Thank you for your support of Codebook and for reaching out. I’ve just added a new post to the discussion forum which provides access to a 4.5.10 build which is compatible with macOS < 10.15: Codebook for macOS 4.5.10 - LTS for < macOS 10.15
Let me know if that allows you to download Codebook for macOS 4.5.10 and install it on your machine which is macOS 10.13. Thanks!