Was browsing the SB app and came across this. I previously signed up when there was 100% cash back and it tracked perfectly.
Make sure not to cancel auto renew within the PIA settings otherwise you won't get the cash back.
3 year + bonus 2 months is $109, and you should get $119.9 in cash back.
Windscribe used to work really well with Netflix (haven't had Netflix for >1y, so can't say if it's still like that).
It's definitely working well to get US Amazon prime content.