I'm developing a Discord bot for a server admin. we're considering using Railway to host it. I would be the one using the service and the admin wouldn't even touch it. I can't use my own card

the pro plan which allows sharing is way too expensive and overkill, the bot's for 1 private server and could prob run on 1/4th the hobby plan's hardware

the questions are:

1. if they create an account with a payment method then give it to me, is that allowed?
2. then would the billing menu only show me the 4 last digits of the card number as with most services?
3. their Github account is p much unused and was obviously not deemed active enough for the trial. will this be an issue even if they pay?