Minecraft Realms Error 429

This appears to be a duplicate of REALMS-6147. If you feel that this issue is affecting you, feel free to vote for the ticket to give Mojang a basic idea of how many people are impacted by the problem. Just to further inform you, this will not determine how quickly the bug gets handled or fixed. Like I said earlier, it just gives the team a general understanding. See the duplicated link for further details.