Very fast response from BAEC to a letter written last Monday:-
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">It was disappointing to read about the problem you had with our online check-in service last week. We were conducting a check for bookings that were made online and this affected most of our customers. I can understand how inconvenient this must have been for you. However, we have now developed a code fix to avoid this. I hope that you will now be able to use our online check-in service without any difficulty.</font>
If anyone can make any sense at all of this paragraph, I would welcome the assistance!