Facebook's AD policies explicitly prohibit the use of remarketing pixels in the links you use for ADs. Let's be clear, you can continue to use remarketing pixels on landing pages but not during redirection to your landing pages. In other words, the following scenario is prohibited:
Facebook AD → link with remarketing pixel(s) → landing page
While the following scenarios are allowed:
Facebook AD → link with redirection → landing page with remarketing pixel(s)
Facebook AD → link with CTA (i.e., a landing page) and with remarketing pixel(s)
Any attempt to find a workaround may result in your ad account being blocked. In fact, what do you need remarketing pixels for if you can build a custom audience using Facebook tools?