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 @HvdVeen, have a warm welcome to the Fitbit Community, it's great to have you on board. 
If you're only able to receive Notifications when the screen in your phone is on, please go to your phone Settings > Notifications > Fitbit and make sure the following is enabled:
- Allow Notifications.
- Show in Notification Center
- Show on Lock screen.
After enabling this, you will be able to receive Notifications even if your tracker is locked and the screen is off.
I hope this can be helpful, give it a try and keep me posted in case you need anything else. 
Best AnswerThank you for your help. After hours of searching I found out that it had to do with some do not disturb of my iphone. So it is ultimately solved!
@MarcoGFitbit wrote:Hello @HvdVeen, have a warm welcome to the Fitbit Community, it's great to have you on board.
If you're only able to receive Notifications when the screen in your phone is on, please go to your phone Settings > Notifications > Fitbit and make sure the following is enabled:
- Allow Notifications.
- Show in Notification Center
- Show on Lock screen.
After enabling this, you will be able to receive Notifications even if your tracker is locked and the screen is off.
I hope this can be helpful, give it a try and keep me posted in case you need anything else.
Best Answer
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 @HvdVeen, thanks for taking the time to reply, I hope you're having a great day.
I'm very glad to know your issue has now been resolved. In case you have some spare time, I would like to invite you to visit our Discussions board where you will find great tips and encouragement from other members and if there's anything else I can do for you, please keep me posted! 
Best Answer