Adjusting timers by mobile app

[FrankVZ]

Am I missing something, or is it not possible to adjust timers by the mobile app?
If a timer is set for a certain switch, I can see a button on the app that shows the timer settings, but there seems to be no way to adjust them.

I used the free app until today, but decided to use the payed app (now: version 0.2.226). I have a DS218 server with domoticz 3.9558 installed.

I log in with the same user/pass on the mobile app as I do with the webinterface on my server.

Been looking all over the settings, but cant find the solution. What am I doing wrong?