iPhone 6 Users Face Glitch With WhatsApp After Latest Update

My iPhone 6 is up to date, and I just installed the most recent update for WhatsApp. But since the update, I can't use WhatsApp when my phone's cellular data is on. I've turned off and on my phone several times and even removed and reinstalled WhatsApp, but the problem is still there. I've seen that a lot of other people are having the same problem, and there's still no solution in sight. This problem has been bothering me for two days now. I called Apple's authorized service, and they said that the problem isn't on their end if I can uninstall and reinstall WhatsApp. Well, I can do that. So, it looks like WhatsApp is at fault. I want them to fix this problem quickly for everyone who is affected by it.