Yes, that's what I'm using the credit for.
I applied for another Ink Unlimited on Tuesday. Got 7-10 days. Called in and they pushed the application through over the phone — was just the standard fraud/ID check.
One additional thought if you want to try again. It might be your billing address — if you're using a mail forwarder, that might be triggering a fraud alert. Generally the only thing the card processors check is the ZIP code, so you could put a real home address that has the same ZIP code as your mail forwarder.