Drawabox.com's official subreddit (r/ArtFundamentals) deleted their subreddit back in APIPocalypse last year and had decided to archive it in their website

https://drawabox.com/r/artfundamentals/

If you visit r/ArtFundamentals now, there is a message:

/r/ArtFundamentals has PERMANENTLY CLOSED. Our drawing lessons are still available, completely free, on drawabox.com. We also have a large community you can join on our Discord chat server: discord.gg/drawabox. Lastly, all of the advice I have provided on this subreddit (6000+ comments worth) is available on our archive: drawabox.com/r/artfundamentals. More info on why we closed here: https://www.reddit.com/r/drawabox/comments/14pr4fa/drawabox_is_no_longer_maintaining_an_official/

Quote from the mentioned post:

[...] As of June 30th 2023, we have decided to move away from having an official presence on Reddit. Maintaining a presence on any social media platform comes with its risks - whether it's Reddit, Discord, or any other. When a platform demonstrates a lack of regard for its users, its volunteer moderators, and the third party developers that help provide critical accessibility and usability tools, that elevates the level of risk to something more immediate. [...]