I.T. always has been dinosaur at BMI. The previous owner did not invest and the pidgeons are coming home to roost. Poor Lufthansa were landed with a real pup and are doing their best to drag it forward into the 21st century, but it does take time.
They have revamped aircraft interiors and are upgrading IT and much more, but it takes time to get through to the customer. Lets hope the new website makes it a better booking experience otherwise a different airline is only a few mouse clicks away!
BMI/Lufty are trying really hard to turn things around. Lets hope LH don't run out of patience before the message reaches the customer.