If you complete enough of your daily goals to open all your chests, when you click on the last one you will get a loyalty token. After you collect 7 of these, you can open a 7 Day Free chest.
In each chest, you get an allegiance token. If you collect four of these, you can open a 30 day chest (actually available after 28 days).
I am looking for the chest rewards by ops level. If you have it, please send it to me through Discord/FB/Twitter. Thanks so much! :)