That instance/server was used for testing PieFed functionality and has been shut down.

Our instance is in the process of relocating so it was a good time to see how things compare. Our members weren't interested so it was shut down in favor of prioritizing the relocation of the Lemmy instance. At some point I may come back to it.

I just wanna check if it's a Voyager thing or a piefed.social thing

Using Mlem; their stuff shows up for me. Might be your frontend/app.