If there's a event-only benefit tied to an item in game that can be obtained with real-world money you should absolutely be able to receive some sort of compensation for it not operating as promised. They said distance would be halved and they were wrong for a period of time.

Other more transparent mobile developers alert everyone to the existence of errors like that and compensate appropriately. Pokemon Masters just days ago apologized for two almost inconsequential bugs that had been in-game since launch and were well-publicized by the devs themselves by handing out 6000 in-game premium currency. I'm not trying to say that this in particular is some kind of big deal, but if they want people to confidently spend money on their egg lottery, it should at least function properly.