I think that's just whether you have printed the ticket out (not possible)
Mine has a red X and I got a email telling me I'm on the reserve list
see below
"
You have been placed into the reserve pot following the draw of the ballot for the following match:
Manchester City v Everton
Sunday 23rd May, kick-off 4pm
Should tickets remain available once the priority pot sales window has closed, they will be made available to supporters in the reserve pot from 9am, Monday 17th May.
There is no guarantee that the opportunity to buy will be offered to the reserve pot. Please ensure you check the
ticketing website for updates and should the reserve pot sales window open, simply log in to your
online account, to select and purchase a seat."