Oh makes sense now,because I was testing if link works pasted in browser.thank uThat is correct, we blocked direct traffic sent to EMBED URL due of massive high DMCA.
If you want to sent traffic direct to vtube you need to use the download url "https://vtube.to/gpx41m2kohs3.html" and not the embed link.
Embed code work only if the code is paste into website, or you access this url from a source website.
If you simply copy the embed link and open it in the browser, it detects that there is no source where you came from and it appears as an error.
I hope you understand now.