Is it permissible to upgrade an account on the website "wsbux" using points earned by clicking on advertisements, knowing that this upgrade increases the value of each click without a monetary payment, and am I sinful for my previous ignorance regarding the ruling on purchasing referrals and golden memberships on other profit-making websites?

A precise ruling cannot be issued due to insufficient information. Earning points by clicking on ads often involves legal prohibitions, including deception if the sole purpose is to click without viewing the content, the presence of impermissible ads, and upgrading membership for a fee, which is considered gambling. The safest approach is to avoid dealing with these companies. Whoever commits something forbidden out of ignorance of its prohibition is not sinful, unless they were negligent in seeking the obligatory knowledge.