A rate limit block is a temporary block that may automatically be put on your account if we notice that you've repeatedly done the same action too many times in a short period of time. This is to prevent spam on Pinterest and to keep Pins working properly.
You might hit a block if you:
Log in a lotComment on Pins very quicklyPost the same comment many timesFollow a lot of people in a short period of timeAdd or save a lot of Pins from the same website quickly
To prevent future blocks:
Try not to repeatedly do the same thingVary your actions by doing different things
If you’re currently blocked, wait a few minutes before trying again. If you’re still experiencing trouble, most limits are removed automatically within 24 hours.