Uphold need to comply with New York’s BitLicense regulation in order to provide the service to NY residents.
- https://support.uphold.com/hc/en-us/articles/360033020351-Brave-BAT-and-US-availability-?mobile_site=true
- https://en.m.wikipedia.org/wiki/BitLicense
You can still earn BAT from Brave Ads. But you’ll not be able to withdrawal it to Uphold.