Custom domain and netlify.app subdomain both return 403 host_not_allowed for all subpages

Site: magenta-florentine-d7aff2

Both asimbly.de and magenta-florentine-d7aff2.netlify.app return HTTP 403 with x-deny-reason: host_not_allowed for all subpages (e.g. /konfektionierung/, /leistungen/). The homepage (/) loads fine in the browser but subpages return 403 when accessed externally. DNS is correctly configured. Pretty URLs are enabled.

You can verify with: curl -I https://asimbly.de/konfektionierung/ — returns 403 with header x-deny-reason: host_not_allowed

This prevents Google from crawling and indexing the site — all subpages show “redirect error” in Google Search Console despite the pages loading correctly in the browser.