If you read the the "4" footnote included in your copied section... > Requires compatible payment card and internet access. Payment cards for supervised users

If you read the the "4" footnote included in your copied section... > Requires compatible payment card and internet access. Payment cards for supervised users may require a separate paid membership (not included with Fitbit Ace Pass). Payment card memberships or parents may restrict purchases of certain products or from certain retailers. Supports Tap to Pay only.