Doesn't sound promising. I had a look on that scamadvisor site then checked on Icann and I see it's Namecheap the domain's been bought at. Registered in March so it's definitely a new site and it's only registered for 1 year. No idea who owns it - hidden with privacy protection. Looks like the address is Iceland.
I've not had a phone call or emojis in the responses. That would be worrying.
A deeper dive into the company
Sister Sites:
"Bass Win Casino sister sites include Lucky Mister, Golden Mister, Yummy Wins, Lucky Carnival, Yeti Win, Bounty Reels and many more.
Bass Win Casino (basswin.com) is operated by Cerberlot N.V. of Curacao."
Apparently banned in Sweden : https://igamingbusiness.com/casino-games/swedish-gaming-regulator-bans-unlicensed-sites/
Judging by the other sites run by the same company, I won't hold my breath.
https://casino.guru/lucky-mister-casino-review