Small Issue with translation file in Appointments+ plugin

Hiya,

I have a small issue with the translation file of "Appointments+".
In the translation file I can only find the word "cancel" once with references to

includes/class_app_shortcodes.php:898
includes/class_app_shortcodes.php:1694
includes/addons/app-locations-location_support.php:75
includes/support/class_app_tutorial.php:217
appointments.php:4086
appointments.php:8359

My problem is: "cancel" has different translations in German.
On the "Make an appointment" page "cancel" would be translated as "abbrechen" or something similar (meaning cancel the action "send").
On the "My Appointments" page "cancel" would be translated as "absagen" or "stornieren" (Appointment has already been made but I want to cancel it)
Right now, whatever translation I choose is shown on both pages.

Can I solve this myself somehow?