TheoBrixton

Every time I create a flight plan, the Elevation Profile shows the entire flight as a horizontal yellow line fixed at the altitude I set as my cruising altitude (see attached image), instead of an arc representing the true flight plan elevation, with ascent, cruise, descent, etc. ALSO, the Elevation Profile shows a number of black dotted lines-- possibly representing profiles of other flights (?) -- which I'd like to get rid of somehow! Any tips would be appreciated.