Some things work differently in standalone… For instance:
to conserve memory I recently converted object references on my data tables to soft object/class references and load them at runtime using a synchronous load function I exposed to BP. Worked fine in editor. But it turns out, that was because in the editor those assets were already loaded. Running in standalone, the game failed to load my assets causing a number of issues.
my point is, if your functions aren’t even getting called, maybe there is some overarching issue like this holding things up. There has to be something broken along the way. I doubt rebuilding your blueprints from scratch is going to fix what’s going on.