Pinterest only supports the IPv4 proxy type. You cannot log into Pinterest with IPv6 type. We made an update for this in our panel to not order the wrong ip, but still Pinterest does not support V6
the information we give.
If you're producing content on Pinterest with automated tools or for personal account management/ marketing, you should use a quality Proxy. You can make your Pinterest Marketing seamless by using your private Proxy on your accounts so that your accounts are not suspended/ restricted.
You can purchase IPv4 static or mobile proxy for Pinterest.