Currently ClassiPress does not have automatically recurring payments, however you can choose for users to be notified when an ad/membership has expired so they can be prompted to renew it. Recurring payments is planned for a future release of the theme. There is also no option to subscribe to a specific users profile, so these features would require customization of the default theme on your part.
AppThemes does not offer customization or development services, however we do have a
certified partners page where you can find developers for hire. If you make contact directly with an outline of your requirements, they can provide a quote for the work. Thanks.