Would not trust these guys at all, they have copied and infringed on a UK leading brand and ripped everything off from their site. Only a matter of time before these guys get shut down. If you want an official cashback site, just search on google for cashback and the official leading UK sites will come up, not some cheap imitation websites in India.
Avoid these guys like the plague! I’m surprised their site is allowed to show in the rankings, but hopefully won’t be there for long.