Hello,
I found the culprit and I think I need to address this more generally but I still need to find a good way.
TL;DR: There is no problem on the plugin-health-score app, the score are correctly up to date but not on plugins site. This because the plugins site updates the scores it knows when it's built.
The scores you see on the plugins site are fetched when the site is built. Not when you look at them.
As the site is not built every hour, but the scores are, you can have a discrepancy between the score of a plugin and the score shown on the plugins site.
Your plugins up to date scores can be seen at
I'll also add a link to the plugin-health-score page on the plugins site so it can be reached more easily.
I hope this answer the question of "why the scores are not updated?", but I know it's not answering the problem of the discrepancy.
-- Adrien