Word Length-Sum Multiples
05AB1E, 16 15 bytes
þIáÇ32%«ODXgÖ*Ā

Input as a list of characters.
-1 byte implicitly thanks to @ovs.
Try it online or verify all test cases.
Explanation:

þ                # Only leave the digits of the (implicit) input-list
 Iá              # Push the input-list again, and only leave its letters
   Ç             # Convert each letter to its codepoint integer
    32%          # Take modulo-32 on each codepoint
       «         # Merge it to the list of digits
        O        # Sum this list
         D       # Duplicate this sum
          Ig     # Push the input-list again, and pop and push its length
            Ö    # Check if the sum is divisible by this length
             *   # Multiply it by the duplicated sum
              Ā  # And check that this is NOT 0
                 # (after which the result is output implicitly)

3 bytes (D*Ā) are used for edge-cases 0/00/000/etc.