Ryanair have issued the following statement which will surely anger some customers for the suggested time-frame..
This is happening due to a Reservation System Upgrade. Speaking of apps and upgrades Ryanair have yet to release a Windows Phone app which they did say LAST YEAR it was in the works.
Due to an essential reservation system upgrade the below services on www.ryanair.com willbe unavailable on the 19/20 June 2015 (19:00hrs – 05:00hrs GMT+1). Ryanair strongly recommends that customers travelling on Friday 19th & Saturday 20th of June 2015, ensure that they have checked in online and printed their boarding passes by Thursday 18th of June 2015.
Online Check-in – Not available from 19:00hrs (GMT+1) on Friday 19th June 2015 until 05:00hrs (GMT+1) on Saturday 20th June 2015.
Customers should check-in online before or after the above closure times. Online check-in is available from 30 days before up to 2 hours prior to the flight departure time (except during the closure period).
New Bookings cannot be made on Ryanair.com/App between 21:00hrs (GMT+1) on Friday 19th June 2015 until 05:00hrs (GMT+1) Saturday 20th June 2015
Flight Changes (date/time/route) cannot be made between 21:00hrs (GMT+1) on Friday 19thJune 2015 until 05:00hrs (GMT+1) Saturday 20th June 2015
Review Existing Booking – This service is unavailable between 21:00hrs (GMT+1) on Friday 19th June 2015 until 05:00hrs (GMT+1) Saturday 20th June 2015.
Airport Check In /Bag Drop – The Airport Check In/Bag Drop desks open two hours prior to the scheduled departure and early check-in of baggage is highly recommended. The Bag Drop desks close strictly 40 minutes before the scheduled time of departure.
All passengers travelling with checked baggage are recommended to arrive at the airport 2 hours before their scheduled flight departure time.