If this god awful site wasnt riddled with enough problems - so much so only log in and leave - on day 6 of the daily login streak, it tells me ive lost the streak. What a fucking disgrace of a site.
You can try following the site's typical standard reset time of 12 PM UTC and adjust it based on your timezone.
That's the time they release daily cashback rewards. If having trouble with what the equivalent time of it in your timezone, just check the index page of the site (desktop version) and scroll down a bit, and you'll see there's a countdown there about cashback.