ICELANDAIR MODIFY BOOKING NO FURTHER A MYSTERY

I just booked a 5 day, six evening stopover over a one particular-way ticket. I’m traveling from Boston to Bergen, Norway to affix a tour group. I can get off in Reyjavik then go on to Bergen. The tour ends in Helsinki so I couldnt e-book Qatar Airways Australia contact Roundtrip, And that i wasnt required to. Look at below just before booking a