Could you upload your project to a file sharing service (Dropbox, Google Drive, etc) and share it with me (chris underscore hubbard at sil dot org) and I can take a look. Thanks.
On my side, I’m getting the suggested words but only if I have only one keyboard in the app. If I add another keyboard, the Lexical models no longer show in the app.
Turns out the issue was a mismatch in the language codes between the keyboard and the lexical model. Keyman handles it fine, but this is a case of macro-language mapping to sub-language that KAB doesn’t do automatically like Keyman. When I made the language codes match, voila!