UK players have not been able to use the buy button since the Gambling Commission pushed operators to remove it in 2019, and a few other jurisdictions have followed with similar restrictions. The same game will load without the option if you are logging in from a blocked region. For anyone unsure whether their market still allows it, https://thebonusbuyslots.com keeps a short country overview alongside its game pages, which is more current than most general gambling wikis. VPN workarounds usually breach operator terms anyway.