Hey gambit50
Have the same problem. Seems to be a little more complicated.
If you want to know more i think it is explained here:
“Structured Learner”
“https://github.com/KeremTurgutlu/deeplearning/blob/master/avazu/FAST.AI%20Classification%20-%20Kaggle%20Avazu%20CTR.ipynb”
Still trying to wrap my head around it. Hope that helps.