You'll need to contact customer support. Give them all information and do mention your travel date.

Do you have iOS or Android? Which version?

I had sent the issue to customer support  as well. I have no response so far. 
My version is ios ver.23.2

it looks like i need to keep waiting then. How long normally does it take for the reply? 2 days?
it seems to be very common problem.  Wish u cud fix this bug soon.

regards

I just got contacted by support team. 
This problem would cause to one using bhuddhism year (or other non christian /gregorian year). 
 

Simply change For iphone.. goto setting → language → calendar → gregorian . Then it should be fine. Hope this is helpful.

cheers