First, "sevendoorss01e03" looks like a TV show episode code. That probably refers to "Scooby-Doo! Mystery Incorporated" or another show with similar naming. S01E03 would be Season 1, Episode 3.
The mention of a link could mean they want a download link to an episode, perhaps in a specific resolution and audio format. They might have stumbled upon such a link on 9jarockscom but need help finding it or understanding it. sevendoorss01e031080px265aac9jarockscom link
The technical terms (1080px265aac) suggest they might be looking for a video file in 1080p resolution, 265 encoding (probably H.265/HEVC), with AAC audio. The 9jarocks.com link could be a source for such files, but that site isn't mainstream. First, "sevendoorss01e03" looks like a TV show episode code
Also, important to note that providing or linking to copyrighted material without permission is against policies. So, if they're looking for where to legally watch an episode, that's one thing, but if they're seeking pirated sources, I need to advise against that. S01E03 would be Season 1, Episode 3