2048-bit DKIM

I generated a 2048-bit key entered it into the 3rd party DNS (Vultr), and used a DKIM validater, and it said was all OK.
I am using an offsite DNS, not CWP to handle DNS.

But am getting an error when the message is received on the other end of it not being valid.

Can CWP only support 1024-bit?
I don't see any option in CWP to create a 2048-bit key.

Note: I am using the same 3rd party DNS with iRedMail and 2048-bit DKIM is working OK.

  I've been trying to do this, but if success fails, did you accomplish something? Apparently Gmail and Hotmail are demanding it or sending you to SPAM

I've been trying to do this, but if success fails, did you accomplish something? Apparently Gmail and Hotmail are demanding it or sending you to SPAM

I got it to work using the 3rd party generator.

Then I just copied the keys to the CWP file folders overwriting CWP's and updating the DNS key.