UPDATE: Hotfix 3.1.1

A new minor code version was released to address the following issue(s):

• Cannot attach Guest Card to reservation with a Company or Travel Agent Card attached (46864).
  
• Load screen appears from the reservation summary screen if there is not a guest card attached - but an allotment card is attached (46386).
• NoMethodError: undefined method "month" for "2017-10-23" in the String (46812).
• Early check in upsell is not being offered during the "immediate" check-in flow (46855).
• Mobile Check-In Now Report does not show dates (46865).
  
• ArgumentError: Unknown key for "arrival_date" (46885).
• Error message occurring when opening the Staycard (46891).
• Vertical Booking Reservation Creation callback is not working because it is marked as invalid by the OTA processor (46936).
• Should not fail reservations created without a "Company Name" (46852).

For more information, please submit a support request here.