Did some cold calling and emailing Citi reps this morning and was able to get a link to the 100k offer. One of the reps told me that the offer is in branch only and would not send the email, but none of the others had problems accessing the email. As others have mentioned, the link is good for 10 days.

DP:
100k via email
The application errored out twice when I tried to apply while I was signed into my Citi account on another tab. I signed off, and the app went through without an issue.
Instant approval for $30.5k
Was 3/24 when applying
AC passes loaded instantly
Welcome email said card will arrive in 3 days, but online says 7-10 business days