RTP over different servers not working

[R3miiTV]

Description of the problem

/rtp does not work when I use a cross server setup.
It always says "Error: Failed to finish teleportation as the target world could not be found."

steps i have checked

Bungeecord activated
Using REDIS and changed broker_type to REDIS
Checked that server names in bungeecord , servers.yml and rtp.random_target_servers are the same.
cross_server is enabled in the settings.
rtp.cross-server is set to true

Server Setup

PurPur 1.21.4
Huskhomes 4.9.1

**Screenshots / Logs **.

**Lobby / Spawn Server
server.yml: https://pastebin.com/C5aTf5DD
config.yml: https://pastebin.com/D3M5GX6E

**Main World
server.yml: https://pastebin.com/3Sy2sdzQ
config.yml: https://pastebin.com/YdrCpFUS

Bungeecord
/server: https://cdn.remii.de/KXoiH.png

Various screenshots
/rtp (name) tabcomplete: https://cdn.remii.de/HYHhQ.png
/rtp (name) mainworld (no world): https://cdn.remii.de/r8c9g.png
full command errors: https://cdn.remii.de/AnEbT.png

logs (no errors): https://pastebin.com/6LfMsStf