You can check whether the Google Analytics remarketing pixel is triggered or not.
In order to do that, please follow these steps:
- install the Tag Assistant extension within your Chrome browser
- click on the Tag Assistant icon and enable it
- open a new Tab
- now paste your tracking link by adding ?dbgrmrktng at the end (e.g., http://example.com/alias → http://example.com/alias?dbgrmrktng)
- "Tag Assistant" will check your pixels and will provide you with detailed information
Please note also that, in any case, as reported on the Google documentation, a new pixel may have a delay in showing stats up to 24/48 hours.