I just spent probably over an hour trying to purchase tickets for this. Would have given up under normal circumstances. Every time I chose tickets and then moved the seats and then purchase it would then ask me to sign in AGAIN which would then say that I'd timed out. I wasn't timing out because I was such an expert by the end of it I was doing the whole process in about 1 min but I'd also nearly had an entire section on hold as it thought I was still looking at previous seats.

Go figure.