in your opinion, how to increase BK on my online slot site. By using an IP domain.
At first, having a website residing on IP only is not the best idea... Just a single IP could be banned easily in whatever 3rd party (search engines, hosting providers etc.) and then results of all tough promotional work could be quickly lost. In opposite, residing a website under the static domain is more reliable. In this case, only the banning the domain on the hosting provider's side could block the website from visitors. In all other cases you could keep the domain and change its IP address (DNS), this supposes more longer development.
For all other cases, I'm not sure what «BK» is, but bringing visitors to your website is common for all categories. Bigger amount of visitors supposes your project is exceptional, different from others, being of high quality, support and trust. Those factors are important at first, 'cause whatever promotion you create, it could fall easily because of rumors.
Then, if you invest in promotion, you could either hire educated and motivated persons to do this task only
, either spend the bigger time of your every day to this. There are both legal and a bit doubtful ways of how to do it, but all of them should not suppose true crime. Mentioning your website in related catalogues/directories, submitting to search engines, posting backlinks on free/paid websites or forums, sending mails/adopting mailing lists, acting on social networks like Facebook/Instagram/Twitter, creating your own fan groups/forums, and at least posting paper-like ads on bus stops and public ad boards — every piece and kind of information you submit to public, could bring you something profitable. But as to repeat, this is an everyday job.
And you should not give up if you don't see immediate results. Having an online slot site supposes you are in the area of big competition, and it could take couple of years until you see first results of investments.