Despite assurances from WhatsApp that they will not be ending support for BlackBerry OS, BlackBerry 10, Nokia S40 and Nokia Symbian S60 until June 30, 2017, BlackBerry 10 smartphone users everywhere are reporting that the WhatsApp application has stopped working on their devices. Instead, they get a flash page announcing that WhatsApp no longer supports their phone.
Interestingly, some other BB10 users report still being able to use WhatsApp. Some other users have reported that after updating their WhatsApp from BlackBerry World, they were able to resume using the service.
Update From BlackBerry World
If WhatsApp has stopped working on your BlackBerry 10 smartphone, you might want to give that a try. Update the app and see if that resolves the issue. If an update does not resolve this situation, then perhaps WhatsApp has finally dropped support for BlackBerry 10. In which case, it is time for you to switch to a supported smartphone.