The rules for advertising have been updated on E6ai and we will no longer allow users to advertise paywalled content.
You can check them out in the uploading guidelines

Advertisements

• Do not advertise on E6ai
• No advertisements of any kind for paid content
• No Patreon logos or other paywall logos
• No mention of paywalled content in descriptions
• No links to paywalled content

Exceptions:

• Tip jars are allowed
• Commissions using the "Commission Info" field on your profile is allowed