I have a persistent red dot too.
Do you mean no magenta bars are shown on the forecast chart but the red dot appears?
How close are you to your target date?
There were magenta bars on the forecast chart, even though the race-based training plan said it was OK. I think the ultra race that I used for my target (one I have done before) may have confused the algorithms.
I’ve switched to a power goal based training plan and that seems to have fixed it.