Problem solved, I found it.
@ruud:h-y-p-e-r.space @antik79:matrix.org @avaddonlfc:matrix.org @sigvie:matrix.org
Welcome to the official Lemmy.world Support community! Post your issues or questions about Lemmy.world here.
This community is for issues related to the Lemmy World instance only. For Lemmy software requests or bug reports, please go to the Lemmy github page.
This community is subject to the rules defined here for lemmy.world.
You can also DM https://lemmy.world/u/lwreport or email report@lemmy.world (PGP Supported) if you need to reach our directly to the admin team.
Problem solved, I found it.
@ruud:h-y-p-e-r.space @antik79:matrix.org @avaddonlfc:matrix.org @sigvie:matrix.org
Just go to the "admins" of this instance on the home page of lemmy and click on a profile and then "Send Private Message" it opens matrix.