This is slightly incorrect. By sending a request from your business website (SimpleAnalytics) to your personal domain (Adriaan), you actually transfer personal data. In this case, it’s the IP address, which according to GDPR is considered PII.

Taking into account the scope of privacy terms provided on your business website, it doesn’t include data sharing with your personal entity through your website. So this is basically illegal, unless adriaan[.]com belongs and operated by SimpleAnalytics company.