If you haven't sent a vouch yet, I would be happy to receive it and leave a honest review based on the vouch.
i'll send the vouch soon. you have to follow regular rules for digital ocean i.e you can't use vcc and u have to register your paypal or credit card to use coupon codes. there is no limitation or expiry to the codes and it will work automatically without sending support ticket.
I had to sent support ticket personally and they changed their ToS there is expiry date (which is after 12 months If you are inactive I suppose , just go and read the tos to make sure).
