I think you’re making a big mistake here. For a project that says they value open source as one of their core values, not having your wallet source code available even though you advertise it on your website is a contradiction. Additionally, saying you will provide it in a ZIP file and then when someone asks:
yes, I would like to access the wallet source code. How can I get it?
For now, we have all the help we need on translation side of things.
This indicates that you really aren’t that open to providing the source code. Why not just make the code available now and make the development available on GitHub, GitLab or a public Git repo? Are you concerned about some glaring security issues? Do you not have intentions of working on the code publicly and allowing the community help contribute to the code? Imagine if other major open source projects had the same attitude about how much push back they’d get from tech community.