Here is Fitbit response.
@Tim Can you open a ticket to Fitbit as well?
We apologize for the delayed response regarding Fitbit app inquiry. We appreciate your patience in troubleshooting this issue with us.
Our team is investigating this issue, and we're going to reach out to the card company Bunq Mastercard for more information on this problem. Our team will continue to monitor this issue as well, but we may not be able to provide a fix in the immediate future.
We'll continue to monitor the situation, and keep our team informed of the impact to you and other customers.
We apologize for any inconvenience caused by this issue. If you have additional questions, please let us know.