Why do business reward flights appearing in multi-city search but not there when you click on it?

Anyone know why business class reward flights appear in multi search but when you click on it nothing happens?

If you scroll down, there is a red button for “next” or something similar. When I first used this, I didn’t scroll down and was also double clicking waiting for things to happen!

yep have tried clicking the ‘continue’ button but when i do it refreshes to only economy

Yes, this happens to me as well. I put this down to a glitch on their website where the calendar is showing phantom reward seats.