Apple fitness syncing phone to ipad

I know this has been asked before but I don’t have the same success as the previous poster. I use the fitness plus app on my iPad and iPhone, but if I save something to my library it won’t show on both devices. I’m signed in with the same ID and what’s the point of the library if not? I’ve restarted device and have the latest iOS update.

additionally my iPad fitness app whilst doesn’t have any update for it in the store doesn’t show the same workout collections as my iPhone

thanks