What is the deal with 30 day game time actually being 29 days? How is this legal?

[worldofneil]

edit: Original title is based on incorrect information given by chat support. Subs are apparently 30 calendar days, though that's not stated anywhere.
It's still makes no sense that subscription period information is so obfuscated.

There's literally nothing wrong here, just your understanding of how the subscription works. Yes your first subscription will likely be short, because it's 30 calendar days, but how much so depending on what time in the day you started. However, subsequent subscriptions (assuming you don't have a subscription break) are always exactly 30 days. I've been subscribed non-stop for nearly 10 years now, they've always given me exactly what I paid for.

Also your chat support ticket, you say about May 9th being day 29, but it's not. You can literally write it out:

Day 1: April 10
Day 2: April 11
Day 3: April 12
Day 4: April 13
Day 5: April 14
Day 6: April 15
Day 7: April 16
Day 8: April 17
Day 9: April 18
Day 10: April 19
Day 11: April 20
Day 12: April 21
Day 13: April 22
Day 14: April 23
Day 15: April 24
Day 16: April 25
Day 17: April 26
Day 18: April 27
Day 19: April 28
Day 20: April 29
Day 21: April 30
Day 22: May 1
Day 23: May 2
Day 24: May 3
Day 25: May 4
Day 26: May 5
Day 27: May 6
Day 28: May 7
Day 29: May 8
Day 30: May 9

The same can be done for what chat support said about the next 30 days being 10th May to 8th June.

I just wish they would refund time lost because this game surely has a *lot* of maintenance.

Sarcasm...? This game only has a few hours planned maintenance every 4 months...