It seems that reviews cannot be submitted when the captcha is turned on. I turned off the captcha and then it did work. I am using recaptcha v3 right now, and I am also using this for another form somewhere on my site (same keys). Tried changing this to recaptcha v2 invisible, but this did not work. When I completely switched off the recaptcha, the reviews could be submitted.
Hopefully you can help me with this issue!
The page I need help with: [log in to see the link]