Hi oeemm1,
I´ve just tested the Approach. I used the B737-800 and placed the plane at LOWI. If You use a second Monitor, You can place the map on this Monitor. Then You can click on the ILS approach centerline. This will be indicated yellow. At the pop-up window, which comes up,You can select the ILS Approach of LOWI 26.
Press the "P" button. now adjust Your Speed, active VOR-LOC and Switch on the Autopilot "CMD". Unfortunately You will see no reaction if You press this Buttons, means no green light at the Buttons are indicated (bug?).
Now activate Your flight, by pressing angain the "P" button. You will see, that all Buttons what You have activated before, are now indicated "green". If You reach the glidepath initial Point switch to "APP". All is working well, the centerline is on 252 degrees. Just before You reach the threshhold of LOWI, switch off the Autopilot, because You have to turn to 255 degree manually. I´ll think the final Approach ist not correct adjusted, but pilots will find normally allways a way to land without a crash :-).
Kind regards.
Horst K
P. S. Using X-Plane 11 11.01r2