It's not that...it's the integration with my app - that is lacking. i.e. being able to put a user on a trial account, then have the app send an 'upgrade token'

It's not that...it's the integration with my app - that is lacking. i.e. being able to put a user on a trial account, then have the app send an 'upgrade token' to 2checkout when their trial expires. Then also automatically renewing every month - and allowing the user to be able to upgrade and downgrade as they see fit (from within the app). The integration is very lacking for 2checkout.