Sourdough sorrows

Toast

Help!  Never got much rise on proof (used baskets) after 13 hours (recipe says 10-13 hours). Baked raw. Bottom of bread cracked. Score was “healed.”  What the heck. The more closely I follow directions the worse it gets. Any suggestions?

I've tried a few of Paul Hollywood's recipes and never had much success with them.  I always follow the recipe exactly the first time I make it regardless of what kind of product it is.  Personally, I've never had that much luck with his bread recipes.  I know he's supposed to be a bread guru, but.... they haven't worked for me.