Just got the notice from WarriorPlus that older products need to be upgraded to a new version of W+. No details in the email of what needs to be changed, but looking at my products I see this:
This product is currently marked as 'standalone', which was designed to allow you to sell single products as a WSO on the Warrior Forum. Our Warrior Forum integration is being discontinued, and soon all Products will need to be sold as part of an Offer, where you can specify your salespage, as well as other options. For now, we have copied the WSO forum URL to be used for selling this product, so it will continue to work. But we recommend turning off the 'Standalone' switch and using an Offer as soon as possible.