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
Welcome to the Community @metoo980. Thanks for troubleshooting this by yourself. If your One is not syncing with your iOS Fitbit app, I recommend following our Syncing Troubleshoot.
I hope this works, let me know the outcome. 
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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
You are welcome @metoo980. I am glad to hear that your app is now working. If you need anything else do not hesitate in letting us know.
Happy stepping!
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