The interface language of FineReader PDF for Android is not the same as my device's system language.
FineReader PDF for Android uses the mobile device's system language as an interface language.
According to the Specifications for FineReader PDF for iOS and Android, the following interface languages are available in FineReader PDF for Android:
If the system language is not supported as an interface language, FineReader will automatically choose the second (next) language from the language settings list.
To set English (or another preferable) as the interface language of FineReader PDF for Android, please do the following:
Go to the Settings of your mobile device > Language & input > Language & region > Drag and drop desired language on the second place of the list.