We're not aware of any restrictions that might be imposed by Booking.com if you simultaneously use their Genius and our partner links for cashback. And we are convinced that your booking price should not change, even if you have used our affiliate link.
Prices in Booking.com's Genius are tailored specifically for you. We believe that Booking.com won't change the prices for you if you also use both their Genuis and our affiliate link for cashback at the same time. Despite this, we encourage you to double-check this yourself, as we don't have the ability to see the exact prices that Booking.com may provide to you.
If you're already logged into booking.com and have chosen a hotel to book, we suggest that you compare the price you receive before using our affiliate link with the price after.
Your personal link to booking.com with cashback from Finalprice.com posted in the profile, in the Special offers section https://finalprice.com/profile/special-offers