@Mazoon was super kind and send me his working version of the app! Unfortunately app behaves the same way still. That just got me thinking that we might have same problem here as with the OP-mobiili app Finnish OP-Mobiili - #21 by avhakola .
@domo141 as your easy to comprehend guide helped me with OP-mobiili app , could you or someone who understand command line tool help me by confirming if following commands would make sense to try?
devel-su sh -c 'echo kernel.yama.ptrace_scope = 0 > /etc/sysctl.d/92-finnairvisa.conf'
devel-su sysctl -w kernel.yama.ptrace_scope=0
Or should it have the same effect only with the second command if it would work?