Upgraded to tier 4 form tier 2 and got charged full price for both. AppSumo promises to give a refund within 60 days of purchase but it does not give me an option to click refund for tier 2 license since it says that it is outdated now although I upgraded within 3 day period. Unable to connect with a human on AppSumo neither, only leads me to articles on how to get refund but does not address my issue.