How can i check if I correctly put the Facebook pixel on the remarketing section of Joturl?

You can check whether the Facebook remarketing pixel is triggered or not.
In order to do that, please follow these steps:

1. install the Facebook Pixel Helper extension within your Chrome browser
2. open a new Tab
3. now paste your tracking link by adding ?dbgrmrktng at the end (e.g., http://example.com/alias → http://example.com/alias?dbgrmrktng)
4. "Facebook Pixel Helper" will check your pixels and will provide you with detailed information

Please note also that, in any case, as reported on the Facebook documentation, a new pixel may have a delay in showing stats up to 24 hours.