It would be fantastic to have a bundle expire on a specific day each month rather than a number of days after the bundle is bought.
For example, instead of buy bundle 9/1/2016 expire 30 days later, have it bought 9/1/2016 and expire on 10/1/2016 regardless of the number of days. This will allow the 28 days, 30 days and 31 day months to no longer be a problem.
Thank you for this suggestion! This feature request or some aspect of the functionality suggested is currently being reviewed for possible inclusion in a future update. If there is additional information, this post will be updated to reflect it.