Does sin befall one who directed people to a forbidden investment website and then regretted it and informed the investors of its prohibition, but some of them continued, and is it permissible for him to benefit from the commission he receives from the investors who continue on the website despite his knowledge of its prohibition?

Investment in this site is forbidden because the profit is guaranteed and attributed to the capital, which is sufficient to prohibit this transaction. The ignorant person is absolved of sin if he repents by ceasing his participation and promotion, and striving to undo the consequences of his invitation to investors by informing them of its prohibition. Repentance is valid even if not everyone stops their forbidden investment. The commission earned for promoting an impermissible transaction may not be benefited from.