
See this picture? What's wrong with this picture. My daily reward resets in 20 hours, right? It's the very first day of the new month (or the last day of the previous month, but the first day of the new month rewards). There are precisely one reward per day in this month. So, according to this, THERE ARE NOT ENOUGH DAYS IN THE MONTH TO CLAIM ALL THE REWARDS. A bit specious, at the very least.
What you are seeing is a bug.
I logged in on a character and tried to claim the reward. Oh, drat. My bags are full. So I ran around, did some odds and ends, had to relog at one point to loot a thing... then I switch to another character. Go to accept my daily reward... only now it's not for today, now it's for tomorrow. Except that if I don't get the reward
today and wait for
tomorrow I now won't get the very last reward. Nobody else seems to have this issue, my spouse sure didn't. They got their reward just fine. I'm just gonna be left out in the cold just like the missing event tickets that I didn't get for the days they just didn't drop despite the other event items dropping.