Then how do you expect the problem to get fixed? Do you think I’m a mind reader?

Did you open a bug report?

Lemmy supports federation with Peertube since a long time.

https://github.com/LemmyNet/lemmy/pull/2244

Seems like fetching the post listing from Peertube is broken, but you can fetch individual videos by url. Also if you follow a Peertube channel new videos will automatically be federated and show in your feed. If you encounter such problems please open an issue, we cant fix bugs that we are unaware of.

https://github.com/LemmyNet/lemmy/issues/6195

Thanks for linking my project. Im happy to answer questions about it. Also here you can find the git repo.