We were booked on the cancelled TA. Had e mail last night with link to special coronation cruise.
We have booked but it took 30 mins ,2 laptops and a phone on queue for answer ( just in case ) .
Had same problems, site crash and unavailable red notice coming up. Perseverance paid and we managed to book a Queens Grill with our 20% credit.
So glad we managed to get on. Love sailing in and out of Liverpool. Hope we have a special viewing of coronation and Gala evening. It makes up for disappointment of TA cancellation but a bit of rearranging needed.