Ulta customer service unable to generate a diamond day code

I'm a Diamond member, but I’ve been missing out on the monthly "Diamond Day" codes because I’m not receiving Ulta’s emails.

Even though my app settings show I’m opted-in, Customer Service claims I’m not. When I reached out today at 8:00 AM ET to fix the issue and ask for today’s code, the agent told me "there are no diamond codes available." This implies these codes are limited supply, not a guaranteed perk for all diamond members.

Is anyone else having trouble getting their monthly code or being told that "there are no diamond codes available."?