Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
Hello @Sandra84, have a warm welcome to the Fitbit Community, it's great to have you on board. 
If you have already restarted your Charge 2 and in case you still have your old phone at hand, I would like to suggest going to your old phone's Bluetooth settings and removing the Charge 2 from the paired devices. Then, please go to your iPhone settings > notifications > Fitbit and make sure the following is enabled:
- Allow Notifications.
- Show in Notification Center
- Show on Lock Screen.
Additionally, please make sure the tracker is not currently in the "Do Not Disturb" mode by pressing down the button for 2 seconds while on the clock screen. A message and a vibration will let you know if "Do Not Disturb" has been turned on or off.
I hope this can be helpful, give it a try and keep me posted in case you need anything else. 
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Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
Hello @Sandra84, I hope you're doing well, thanks for taking the time to reply and letting me know your issue has now been resolved, I'm really glad.
At this moment it's not possible to receive Whatsapp notifications in the Charge 2 when using an iPhone. I understand how important this is for you, which is why I would encourage you to check @Hithere1's suggested idea to implement this feature in a future update. Feel free to add your vote and comment, this is the best way to make your voice heard.
I hope this can be helpful, if there's anything else I can do for you, please feel free to reply.
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