You can connect to the Android device, and you can perhaps see the desktop on the remote Android device – BUT – you have no input control. Or you cannot even see the screen.
To protect you, many Android devices – by default – do not permit applications to view or inject input.
Visit this WiseMo page to learn more and to trouble shoot the situation: more
Another reason for no input control, is if the security settings defined for the WiseMo Host module installed on the Android device has been configured to NOT permit keyboard control, or to not permit remote desktop control at all.
NOTICE for Samsung devices running Android 11 and Android 12: Be sure to use build 22-145, downloaded from Galaxy store or from WiseMo, e.g. here.