C++ error call to non-static member function without an object argument

I don’t think that static BlueprintImplementableEvents are allowed.

As you’re calling from within the same class, you could just remove the static specifier and call Successfulshare directly (e.g.)

void Aaccessactorios::Callsuccess() 
{ 
    Succesfulshare();
 }

If you need to call it from other methods, then you’ll need to get access to an instance of Aaccessactorios and call like

void UMyClass::SomeMethod(Aaccessactorios* acc)
{
    acc->Successfulshare();
}