Did anyone notice the digits at the end of the URL were completely different this time? Rather than the usual 250000 ones which take you direct to the add reg page, I got multiple with random numbers - looking back across my devices I got:
2575665
2500000
2455014
1450001
If that number changed to a randomly generated number each time, might it make it more difficult for people to know what to target the bots at? I mean it would probably only delay it by a minute while someone got that number at 9am and then targeted the bot toward it but maybe some steps in an attempt to stop them?