If you're getting spam registration from malicious entities / bots, you can stop this by adding a Captcha or Antispam plugin to your registration.
Many captcha plugins are also compatible with B2BKing's B2B registration.
We have specifically tested B2BKing with the following captcha plugins and we can confirm they work together correctly:
ReCaptcha Integration for WordPress
Advanced noCaptcha & invisible Captcha (v2 & v3)
Depending on the mechanism used by the captcha plugin, it will add a verification mechanism, the most common one being the 'I'm not a robot' check:
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