Anyone use a USA debit card with SCOOT AIR?

Will probably use Scoot to go from CNX to SIN, cost US$200, about.  Or use Silk, same route, cost US$500 +.  What a no-brainer.

But have found budget air often with poor webpages, bad service, lousy WWW connections, etc.

Per the title: if you have personal experience with Scoot Air recently and used a USA debit, or credit, card, plz tell me how it went.