I cant subscribe...

I  from japan and using and debit card (visa) but cant subscribe with your site (I use this card daily and also for payment in the internet like amazon, steam of valve, ... so Im sure there is no problem with my card) 

Stripe shows your card was declined with an insufficient funds error. Other people have been able to subscribe so I know payments are working. It sounds like it's probably something on your end.

I see, thank you