Why am I getting 403 errors on my Webflow site, but only when I try using my Ionos domain?

If you're experiencing 403 errors on your Webflow site specifically when using your Ionos domain, there can be a few potential causes for this issue. Here are a few troubleshooting steps you can take:

1. Check your domain settings: Make sure that your Ionos domain is correctly configured to point to your Webflow site. Double-check the DNS settings to ensure that you have set up the correct CNAME or A record to map your domain to the Webflow servers. Keep in mind that changes to DNS settings can take some time to propagate, so allow for some time for the changes to take effect.

2. SSL certificate: Verify that your SSL certificate is properly installed and set up for your Ionos domain. Webflow provides SSL certificates automatically for Webflow-managed domains, but if you're using a custom domain, you may need to set up SSL manually. Make sure you have set up SSL correctly to avoid any security-related issues.

3. Check Webflow hosting settings: In your Webflow project settings, ensure that your Ionos domain is added and set up correctly as a custom domain. Check that you have published your site with the correct domain settings to ensure that it's properly configured.

4. Verify web server access permissions: The 403 error often indicates that there might be an issue with permissions on the server side. Reach out to Webflow support or your hosting provider to make sure that there are no restrictions or improper configurations that may be causing this error. They can assist you in investigating the server logs to identify the specific cause of the 403 error.

5. Temporary caching issues: It's possible that your browser or your system may have cached some information incorrectly, leading to the 403 error. To rule out this possibility, try accessing your Webflow site with your Ionos domain using a different browser or device. Alternatively, you can try clearing your browser cache and cookies to see if that resolves the issue.

If the issue persists after going through these steps, I recommend reaching out to Webflow support or Ionos support for further assistance. They will have access to more specific information regarding your account and can help troubleshoot and resolve the 403 error you're experiencing.