We booked three nights at Adelaides back in late October of 2017. Although the reservation was accepted and confirmed, we found out a few days ago by chance, that the Guest House is no longer open. (It hasn't been open since early October) We received no notification, and when we contacted them, we received an apology, but not an explanation. If you have a reservation at Adelaides Guest House, you need to find other accommodations before you arrive in Scotland.
That is noted on the Updates page for Glasgow.
That is where changes after the books are published are shown.
Sorry for your difficulties.
Thanks for the tip about the link (and for your sympathy). My main concern is for those who won't hear anything before they arrive, especially during the busy summer months.