BotDetect Captcha troubleshoot

Hi,
since the update this weekend, every forms on our websites (fifteen websites with the same problem) are broken.
I use BotDetect Captcha and before that I never had any problem. But without changing my configuration, today the plugin cannot detect if the code match or not with the captcha.
Have you any idea for why it’s doing that ?

PS : – I try to deactivate, it works.
– Uninstall, it works.
– Try different configurations for Ajax, REST and XML-RPC, don’t works.
– With Default mode, don’t works.

Thank you and regards.

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