[HELP] LoL Client stuck on Black Screen / <unknown player> on MacBook M1 (Tried everything)

Hey everyone, I’m running into a wall here. My League of Legends client on MacBook Pro M1 is completely broken.

It loads the "frame" (social bar, settings icon), but the main content is just a black screen and my profile shows as <unknown player>.

https://preview.redd.it/dx0bsofd2nsg1.png?width=1268&format=png&auto=webp&s=7ed955003dfeb6bb29c0d2be3f8fca58c985d179

Here is exactly what’s happening:

• I can open the Riot Client, but once League starts, it stays black.
• I can't click anything or start a game.
• It's happening across multiple accounts, so it's not account-specific.

What I’ve already tried (and didn't work):

1. Full Reinstall: Deleted the app and re-downloaded.
2. Folder Purge: Deleted Riot Games, Riot Client, and riot-client-ux from ~/Library/Application Support/.
3. Cache Clean: Cleared ~/Library/Caches/com.riotgames.*.
4. DNS Flush: Ran sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder in Terminal.
5. Network: Disabled Firewall, tried different DNS (Google 8.8.8.8), and verified I'm not using any VPN, Proxy, or AdGuard.
6. IPv6: Switched to "Link-local only".
7. Permissions: Full Disk Access is granted to both Riot Client and LoL.

I'm a Software Engineer, so I've checked for zombie processes and cleared the TCC database, but nothing seems to fix this "handshake" issue.

Has anyone with an M1/M2/M3 Mac faced this recently? Is there some hidden .plist or a specific Keychain entry that's bricking the session?

Appreciate any help!