I had a similar experience yesterday. Finished Kaweah, which I rated ‘Hard’ in the afternoon, and the app suggested no changes. Later in the evening the website suggested I change next Saturday’s Mount Goode to Mount Hayes. Even when I refreshed the app there were no changes suggested.
I accepted the recommendation.
Lately I have finished workouts using the Windows app and got no adaptation recommendations. Later, on the website, I got recommendations and a subsequent yellow day. Adaptions were 4 and 6 weeks out and very small, only changing TSS by 1 point in one case, and only changing IF by 0.01 in another. Nothing wrong with these, just mighty tiny and relatively far out.