I received a warning for creating content that got reported as spam/advertising.

You received this warning because you sent messages that other
users reported. When you post a message, you agree to abide by our Terms of Use. Don't spoil it for others by abusing the service. Messages that harass, abuse, or threaten; have obscene or otherwise objectionable content; have spam, commercial, or advertising content or links might be removed and might result in the loss of your Gnommie Account.