Error in saving Network Brute Force Protection COnfiguration

Hi, I’m trying to configure the network brute force protection. When I add my email address and submit, I get the following error:

An unknown error prevented the API key request from succeeding. The request for an API key returned an unrecognized response. Please wait a few minutes and try again.

The settings could not be saved. Please correct the error above and try again.

Any help is appreciated.

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