Causes
The site owner implemented Rate Limiting that affects your visitor traffic
Fixes
Step 1
If you are a site visitor, contact the site owner to request exclusion of your IP from rate limiting.
Step 2
If you are the site owner, review Cloudflare Rate Limiting thresholds and adjust your Rate Limiting configuration.
Step 3
If your Rate Limiting blocks requests in a short time period such as 1 second, try increasing the time period to 10 seconds.
Step 4
Unable to purge is another 1015 error code related to Cloudflare cache purge. Retry the cache purge and contact Cloudflare support if errors persist.