Ok. Let me start by saying I'm not going to pretend to know exactly how this achievement works or why it does or does not work. This is more about trying to figure it out and showing what worked for me and hopefully this should help.
NOTE: If the messages I've seen people mention are going to fix this, this solution might become obsolete. Until then, hopefully this assists some of you.
It appears the login resets if you login multiple times in one "day". This might explain why a lot of people could never reach 5 day login forever. Therefore, here is how I attacked this one.
Server/clock reset was overnight for me, therefore, as soon as I would wake up 7-8 AM most days (maybe a little later on the weekend
), I would do a login. I'd collect the daily rewards and spend all the energy I had. Once completed, I would log off/shut down the game completely from the X1 Home page.
I repeated this process for each of the 30 days and hit the other login achievements along the way. I made sure to check the progress on this achievement every day to make sure it continued to rise. Along the way I found that Daily Login V actually appears to be 15 days rather than the listed 14.
Talking with some friends here who also play a lot, the big concern is that doing this will likely make it impossible to complete the event quests. You likely need to log in multiple times a day to complete those and this strategy makes it nearly impossible to earn the cards/complete the tasks for these events. So your options currently are either wait for a patch to fix this problem or give up on events for about a month.