Howdy @antoniomg85
Is this the first time you are connecting? Do you have access to logs? You can check if the fatal error logs for the date you last tried connecting have any details on what might be happening with Facebook for WooCommerce. If it does, please let us know what the logs say.
You can find logs via WooCommerce > Status > Logs
Hello @viandascook and @lidiachez85
It will be helpful to open your own forum threads so that we can individually troubleshoot the behavior you are seeing on your site. While it may be the same error message, it may not be the same root cause and hence not the same solution. I recommend also checking your site to see if there are logs available that will be able to tell us more about the connection problem you have on your site.
@decoactive Thanks for sharing what works for you.