I tried in the past to set up equivalent domains, but I never got it to work.
Whenever I tried, the equivalent domain rule wouldn't kick in and I ended up just deleting the rule.
If you've already followed the steps in the Equivalent Domain Setup article here:
Please also note that equivalent domains do not allow http:// or https:// on the URL string. There are also some more specific rules if your equivalent domains are subdomains, those guidelines can be found here: