I would like members to be able to renew before their subscription expires. eg. Joe's subscription expires on 31 March, but he wants to pay for a renewal on 12th March because he is going to be away for a month and does not want to renew late. At the moment it does not seem that this is possible as the current subscription option does not appear in the subscription options dropdown (we have 4 subscriptions available). I have tried setting the default start date for the subscription to 01 April, but the subscription still doesn't show in the list. I have set 'Disallow Subscription' to default (don't require anything). Any idea what I need to do to get the current subscribed product to show in the list of available subscriptions before the renewal date?
Make sure this product does not have negative price group. Also did you set Require other product settings for that product?