>close tor browser (sparrow can run its own tor service)
>close sparrow
>open sparrow
>server type: private electrum, url: iuo6acfdicxhrovyqrekefh4rg2b7vgmzeeohc5cbwegawwhqpdxkgad.onion , port: 50002, Use SSL

that's a fulcrum server hosted by sethforprivacy
 https://cdn.satellite.earth/42137d21bd456e7c1f28da5a567dafec8c2c4de452c9aa25243529b23d0a953b.png