I didn't want to moan at first, but since "Any feedback is greatly appreciated!", here's my take.
First of all, I am not just "angry because I did not get a room". It's not the first time I failed the initial run. I am even confident I may still manage to get in with a friend somehow. And I have no problem not getting a room if I insert my request into a system where I have a fair chance and just end up unlucky, because with the numbers as they are, some people have to.
But my gripe is this.
You tell people to get up at a sleepy time to use a web thing, that you absolutely must use because it creates something personalized to mail to the hotel.
When it crashed (*because just everyone retrying all over, or someone using scripts, which was highly foreseeable?), you left everyone retrying with no information on like the Telegram EF-Notification channel whatsoever for a long time.
Then at 7:52 you tell them to "hold on tight please".
On 8:13 you write the method has changed, (not will change but has, at whatever time in the past), and that they now need to hastily type in as little information as possible to be as fast as possible to send a mail to the hotel.
Which is in itself very stressful for everyone, prone to result in typos and badly filled out information, worse for people not good at English, and a death sentence for everyone who just happened to be in the bathroom for a few minutes.
But at that time, from what I can gather now, even if you saw it the very second it popped up and quickly pasted together a mail, hundreds of people already knew of this long before because some people either were told so in their registration when it worked for blink, or somehow figured it out, and word of mouth over a lot of channels was MUCH faster than your official information, so that by then pretty much noone had a real chance anymore anyway.
So you once again defaulted to a system where you have to do something really quickly once you get a key knowledge, but instead of announcing that first, with a fair warning when you will give this key, you apparently just swapped to it, and did not give out this key to everyone on official channels even while it already spreaded more or less secretly anywhere else.
This is bewildering to me.
And you ran into a mess again that was highly forsee-able (and foreseen!), and then just roll with an don't fix it.
You could fix it. Even now still. You CAN say "Our method failed, all reservations are cancelled, please instead fill out <this>, add the code we will give you at <time> via <these channels> and then e-mail it to the hotel."
But you don't. Instead, you once again punish people for trusting you and your information, and reward bypassing and dirtiness.