Thanks, Michael. Form submissions are likely to have multiple URLs so having lots of separate URL fields isn’t really an option. I was hoping to avoid using a form handler (although we do use Formkeep) as we have quite a lot of automation set up using Webflow, but if you’re right and it’s spam detection, we may have no choice.
I’ve reached out to Webflow support but nothing back yet. Will update the thread with their response for other people’s benefit.