"--- danlwd fyltr shkn sayfwn-p30download bray andrwyd" If "sayfwn-p30download" contains a known site name, the rest might be a simple Caesar shift:
Given the presence of "p30download" (which is a real site), the phrase might be: --- danlwd fyltr shkn sayfwn-p30download bray andrwyd
Check "andrwyd" → maybe "password" in some cipher. "--- danlwd fyltr shkn sayfwn-p30download bray andrwyd" If
But "p30download" is readable as-is, so maybe only the other words are shifted. --- danlwd fyltr shkn sayfwn-p30download bray andrwyd