If the username change, the referral url must be updated on all previously linked items. As the Affiliate links are based on your username, one must change all previously linked items in order for them to work and log properly.
Most information should be listed here – http://support.envato.com/index.php?/Knowledgebase/Article/View/197/96/how-does-the-marketplace-affiliate-program-work
Let’s keep the Happy Birthdays in one thread to avoid clogging the forumshttp://graphicriver.net/forums/thread/happy-birthday-100-rates-new-badges/139802
Let’s stick to one forum post about this to avoid clogginghttp://graphicriver.net/forums/thread/new-badges/139831
Hi and welcome to GraphicRiver!
You can find all guidelines by following this link – http://support.envato.com/index.php?/Knowledgebase/List/Index/80/graphicriver
As for standards, best would be to take a look at latest approved items in each category or the category you wish to start selling in.
Good luck and I can’t wait to see what you have for us
Hi GraphicWebDesign, I’m sorry to hear you have trouble with such a nice item. Have you checked the Support tab on the items page? If not, you can find it here – http://codecanyon.net/item/mymail-email-newsletter-plugin-for-wordpress/3078294/support
Author has provided some information about the items Support, Revaxarts even has his own Support forum where support seem to be provided. Just follow the link on the page linked above.
Though you should note that Authors can choose to support their items but this is optional and may vary.