ok i have looked in the 2016 section and found this
obdeleven.proboards.com/thread/918/coding-adaptation-ibiza-6p-2016?page=1and in that there is the following ' I have not used this stuff so read the forum and make sure its ok for your car '
Turn off lights or turn corner
With this modification you can disable cornering function.
1 - Module 09 - Electronic. Code (31347)
2 - Adaptation
3 - Select - Leuchte12NL LB45 (Left)
4 - Sub Lichtfunktion B 12
5 - Change value to Not Active
6 - Select - Leuchte13NL RB5 (Right)
7 - Sub Lichtfunktion B 13
8 - Change value to Not Active
Not sure how much you have done with the app but I would always recommend you take a backup before and after changes so if stuff does not work anymore you have a backup to work out what you have done and change it back.
Hope this helps.
If it does not then I would suggest you raise a request directly with help desk via the app or there help website.
However please note I have raised the issue via the forum on the application bugs section
obdeleven.proboards.com/thread/1699/ibiza-year-app