HTTP 429 Error

HTTP 429 error means that too many HTTP requests were sent by the extension from the same IP address/user name. It is how "protects" its data from being collected. 

The extension is built to retry every 3 minutes when this error happens. Therefore you do not need to worry when this error happens, and the extension will be able to proceed normally. However, it is better to avoid this error; please increase the values of the polling intervals.