My counter towards a legendary loot box was reset to 0 when I previously had more than 0. I did not get a legendary loot box the counter just reset for no reason after login on April 1st.
Update: the counter resets after a while I got my 5 from perked up, then it went to 0. Then the one I got for playing enough games made it go up by two even though i only opened 1.
Update 2: I was at 7 before reset, then I went to 0, then I got 5 from perked up and went up to 5 for a while then reset to 0. After getting a weekly box I went up by 2. now after the second perked up boxes I am back to 7 on the count to a legendary lootbox.