Not sure what you're exactly talking about but you may be referring to Danchou Coins. You gain Danchou Coins everytime you spend 100 dmm points for a single roll on the premium gacha or by spending your affection crystals (Which can be obtained by disposing of a girl 3* or higher) in the exchange shop to buy. With these Danchou Coins you can buy a guaranteed 5* or over ticket with a 92.5% chance of getting a Gold and a 7.5% chance of getting a rainbow, much like the 5* ticket dmm version gives you on the 7th day of your beginner week login bonus.
The entire DMM site is down right now and since Kanpani says it will be down for 2 days it may be possible that DMM will be down for that long. If this is the case, don't worry too much since DMM has always provided decent compensation for whenever they are down. Last time FKG was down for 2 days they compensated all their players 120 flower gems. I'm not sure how they will handle compensation this time since it's the entire DMM game site that is down. Maybe they'll compensate with DMM points, even moreso considering they have an anniversary event going on and some people will be missing days to gain stamps but they'll definitely compensate humbly according to amount of time down, as they always do.