The CW flowgraph needs strong signals to decode properly.
In your linked observation there is only a very (and too) faint CW beacon between 200 and 300 seconds.
A good example would be observation 14554090.
By the way, if you like to contribute CW data to Marina’s dashboard, you have to do it manually. Your observation’s data won’t show up on the dashboard.
Marina’s dashboard - CW Beacon row
However, your observations would be a good source for pulling out the necessary data.