VeraCrypt Decryption [mac OSX]

Hello dear community, 

I have a problem and I need your help. I can't get it done for days. 
Hopefully you can help me and this problem can help others who have the same problem. 

I have forgotten my VeraCrypt password and want to recover it. I also know the word combinations, which could help me with the Combinator attack. 

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Information about the VeraCrypt-File:

Encryption Alg.: AES

Primary Key Size: 256 bits
Secondery key size (XTS mode): 256 bits
PKCS-5 PRF: HMAC-SHA-512
Hidden Volume Protected: no

Information about my operating system and Hashcat:

I am using Mac-Pro and installed hashcat via terminal link (GitHub).

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Problems:

1st problem: Combinator Attack does not work 
./hashcat -a 1 -m 0 example0.hash mydict2.dict mydict2.dict 

It is executed, but the words in mydict2.dict do not combine.
In mydict2.dict are words (letters, numbers). 

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2nd Problem: Brute-force attack 
./hashashcat -m 13721 -a 3 Vera.txt

I saved my VeraCrypt container as Vera. Then I added.txt after Vara, so hashcat recognizes the file (Vera.txt).

Where is the error here?

I would be very happy if you could help me!


Kind regards