DMM not accepting my Public PGP Key

I've followed every step of the DNM Bible w/ assured accuracy but every time I try to paste my public PGP key into any market / website (and no I do not plan on using the same one for everything) I see, "Key is not valid." Not sure why this is happening.

Paste your public key here, lets verify its valid first.

-----BEGIN PGP PUBLIC KEY BLOCK-----

mQENBGpFixwBCADLAMMCPSwCkFd9Yi3iniILFgfMAnp6JTuskj5n37BwBQ/+eBxr

fJdYcpfpwM7yqzOGJrjp5PQrMYHR2hxMtd77BR1zARSZdT/Nwc+2HiSxtqBT2UFO

WETS4Ohobok/Ko4BcJUQyy1JliQNBu+sCjaNwk4DK5gSdzM4OwF3J+8s0umgYVmA

rWNHTPD1iUc+sl+JALWArNZDjVgKe29PAIAAVG8huayZwttEUuAyRtrO6acsdZpQ

DxsoRQBcUWOfvMoK3S8m3/UIGt193s1+ajAw+d81+ysXiHinXmWQqvazNYonbYVt

p+XMOVoyI5fEX5pJm7R0rcZdqtmpeyXYRD1bABEBAAG0AzFzdIkBVAQTAQoAPgIb

AwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBFePnfSliKZ4Xy1lUI22dCdKxOFh

BQJqR5ZfBQkFp62nAAoJEI22dCdKxOFh2OwIAK7fJGM1FkkUycDUsGyd414gq2p7

eNu+SX7MZnb7q1meKDsefQCt1sFiy/rjvF3a8cW+m/036RZjn9ytJMPErfl9cto0

730pNfafrDAVTA+Zh8nf53wheU5UIDqGI1RFbZLB7S61gHN8QbdC6+GZzriPEcNY

kDWZvzZM6PMgXSigFRn+ZKsA2W9IddXZlDohxOC9hQMKHAtWIDEkT7tpJSguvQ36

xU3V7TjFM6wVhUvLMsKywRGXInoHEKDsMAUoDwAXh7XMRnmY/Q4L17xM/9vCKYOt

9eg/Zbg4QctBNtwe7OcpqrUpukJDUOfnYYGeE/vUatBvW4UVSPI3jHyWqa+5AQ0E

akWLHAEIAMPOMPdDuj2IK2/4JQ0BRX7TnvMRsZztdkK2w6tmmm3qXRqbBibVWOno

bV7UnVosNjk2jzJqzARqtPfTnGwHfKOkjDEEnQTYzAKfWz/PSDiLisCiYJGTH5a6

kFd2H2SRrBOZfh6pcNUqPkUTjBjN3U9jpghfbTNpEYU37HHRgI2N9RlZQq1VpNIo

21+t8Uxsiucnu4D+Fh7zX/BzFSFZse7p7fWFMmvu4qFir/rVGM0gHfUxkOt9yI0c

6OVKwHONTXLu87xUSEfXEblNQqCw7UY05N1fcCVIWnh5voiDG5ch0YBwiBtHDQWH

5ryhOVaBILJAMRI3VBUlo1WXD7INoRsAEQEAAYkBPAQYAQoAJgIbDBYhBFePnfSl

iKZ4Xy1lUI22dCdKxOFhBQJqR5ZfBQkFp62nAAoJEI22dCdKxOFhz3gIAK3yY8N/

jV4QlfZcftZRGPnMLFcA4k3eJQaIUVxpRAVVCcqiZcyEHMBNC73LBMhJ4EGXG9cS

+2ePcQky6bR172ERVGeZhYX/IYjfglIiEIXuwhGqyOY7dhUym87lbFCYozhNuL/a

pGOKOXeieycF5xcUZ5ZrpQS7JI5UJoQYNHOgdCFI4h8C+hfEWkj1QLuCUVDPOqTW

/FACdtY6uJ33m1ztXmIBiHA7wq2lrDLoPuVfJFHQ/HErUG0QadzbqhLINEXp+unP

QowV+TYCPe8ZcVWp0csUJCPP5XMB6ibGh34VzQoGbvBY0N0MPZwyvQZx3coIByHa

3Pry2VwEIe7A/+4=

=ya5p

-----END PGP PUBLIC KEY BLOCK-----

I can import that to my keyring no problem

Contact the market on tforum through their modmail

Could be because of: gpg: invalid armor header: mQENBGpFixwBCADLAMMCPSwCkFd9Yi3iniILFgfMAnp6JTuskj5n37BwBQ/+eBxr\n

Try pasting your complete key which is:

-----BEGIN PGP PUBLIC KEY BLOCK-----
Comment: User ID:	1st
Comment: Valid from:	7/1/26 9:48 PM
Comment: Valid until:	7/3/29 11:58 PM
Comment: Type:	2,048-bit RSA
Comment: Usage:	Signing, Encryption, Certifying User IDs
Comment: Fingerprint:	578F9DF4A588A6785F2D65508DB674274AC4E161
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=ya5p
-----END PGP PUBLIC KEY BLOCK-----

If that does not work, its because those markets do not accept 2048 bit keys. Create a new 4096 bit key instead.

This. Always use 4096. More secure.