I didn't mind that this wasn't a quest thing that would be so frustrating to play when conflicts/incidents force you to miss opportunities. I've gotten lucky to get everything possible. But even this time, like the quest stuff, I'm always missing the last items. But back then, it was more of a benefit for people who have the DLCs already.
But EA sold us on this event laying out all the rewards in a time frame that would not have made it possible to collect everything in it no matter what. I'm pretty sure all of the things were advertised. You could miss some days, and that's not an issue as long as you've been getting stuff up to the last day (so, IDK how people could only be getting a handful of stuff unless something happened on their end). The main issue isn't the language, which EA seems to think is more important to fix (not that that isn't bad advice, it's not productive for dealing with the real issue). The issue is the last 2 items were virtually unobtainable! You could as well have logged in everyday according to the math, but the other 2 items left fall outside the event window. They left in the language implying that there's more to come by logging in next week like the main description said, but the event had ended, perhaps prematurely.
EA should be doing better by doing us a solid and making up for it. I'm certain all of the items exist, they're just locked. The design of the event is what prevented it from being unlocked. They might as well just put in an unlock cheat, if that's going to avoid making a new event out of it.