Not working for iTunes Podcast submission

[axelkennedal]

Using mixcloud-rss on my profile and trying to submit it to iTunes results in these errors upon validation:

• Can’t download episodes from your feed.
• Podcast artwork must be between 1400 x 1400 and 3000 x 3000 pixels, JPG or PNG, in RGB color space, and hosted on a server that allows HTTP head requests.
• Can’t submit your feed. There is no category tag in your feed, or the category tag is empty.
• Can’t submit your feed. There is no explicit tag in your feed, or the explicit tag is empty.
• Can’t submit your feed. There is no language tag in your feed, or the language tag is empty.