Issue with CDN URLs
Four days ago, one of our CDN providers was experiencing DNS issues, see here: https://status.bunny.net/incidents/j1syhng2crfy
This was causing an issue with the SSL certificate for the CDN URL we were using. We reported the issue with our CDN domain shortly after. Their suggested fix was to re-issue the SSL certificate.
Unfortunately, some of our customers still reported issues with files using the CDN domain. Because of that, we now switched the domain from df-cdn.com to userdata.deftform.com, which should fix the issue as the "userdata" domain is managed by Cloudflare.
Sorry again for the inconvenience.