@Snoepie2 about Vitality and Fitbit, i dont see anything about this connection on Fitbit. Your best choice would be to contact Vitality dirextly and ask them what syncs between the two. Fitbit is not in control of this.
Doing a Google search i see tyey do send some type of information and found a pdf with instructions. https://www.powerofvitality.com/vitalityportal/pdf/what_device_is_right_for_me.pdf
Here is the genal post about Third party cannections https://community.fitbit.com/t5/Third-Party-Integrations/Third-Party-Apps-FAQ/td-p/1874190/
Your best source of help would be to ask Vitality.
Since you mention problems with a third party app, ive moved your post out of the hardware forum
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