While using the app for a few days I have discovered a few bugs.
Setting “Distance in % from market price” to 0 leads to all kinds of problems like crashing the app, and I don’t risk doing that anymore.
Scrolling fast up and down through “Open trades” at one point resulted in some kind of caotic, incontrolable and unstopable scroling, and I had to restart the app.
Thank you for the bug report @risq!
I am sure that devs will look into this as soon as they can. 
Bug reports are always very helpful for this little community of ours.
EDIT: Perhaps raising a Github issue is the best choice for bug reports. There are a lot of things on this forum happening and many are just for support purposes. Devs will find it easier to track bug reports from Github issues.