It's not as easy as just ''making a new code'': there is a process that goes into making the gift cards, even if they are just electronic, and there is a limited amount that they can make each cycle, which is based on the demand (amount of customers predicted to buy the product). There was a rise in demand which means Roblox and Microsoft have to work to put back the codes to satisfy that demand, it might take a couple of months before that happens. Also, it is possible that the price (points) increases in order to control the high demand for Robux, so I would start getting some extra points if I were you. I know it sucks they have not provided enough information when the redeem option disappeared, but don't be so harsh with them, after all this may be the most legitimate and highest-yielding method to obtain Robux.