Originally Posted by
missinglink
I'm flying in two weeks time, and currently within MMB it keeps offering me upgrade to CE (4 seats currently on the outbound flight) for 79GBP, which I'm happy to do as it guarantees me continued silver for next membership year

. However if i try and accept the offer the website returns with with the rather useful "our systems aren't responding" message.
Probably it's because although POU is available, the number of seats available to POU is less than 4.
ba.com is not smart enough to match number of seats in a booking with number of seats available to POU.
Which flight and date are you looking at?