We have limits in place to stop spammers, but they sometimes impact on Pinners who haven't done anything wrong. We're working to fix these limits to stop spammers without affecting real people.
If you get an error message that your login was blocked or you can't save a Pin because of suspicious activity, we may have blocked activity from your IP address or your area. Suspicious activity can include frequent logins or a known spam attack. Sometimes these limits affect people in coffee shops or offices where many people log in at the same time.
If you get an error message, wait 5-30 minutes before trying to log in or save Pins again. Most limits are removed automatically.