servers cannot proccess your request

Description of Issue:

When attempting to access Madden Ultimate Team (MUT), the game returns a MISCSERVICEGATEWAY_ERR_SYSTEM error followed by "Our servers cannot process your request at this time." Additionally, attempting to access Superstar Mode triggers an immediate Error 512. Standard Online Head-to-Head (H2H) matchmaking works flawlessly on the exact same account.

Account Status:

EA Penalty History: 100% clean. Checked the official enforcement tool; there are zero active bans, suspensions, or market/auction restrictions.

Troubleshooting Completed (Local Hardware & Software):

Console Cache: Performed a full hardware power cycle (unplugged power brick for 60 seconds) and cleared the Xbox Series X Alternate MAC address.

Save Data: Deleted the local save data profile from the console dashboard to force a pristine cloud-sync download upon title launch.

Identity Handshake: Reset the EA account password, modified Multi-Factor Authentication (MFA) settings, and flushed trusted devices/authorized applications to force an explicit credentials re-verification screen on the console boot.

Isolation Verification Metrics:

Network Isolation: Replicated the exact same behavior and errors identically across a standard home broadband connection and a completely independent mobile network hotspot.

Device Isolation (Crucial): Swapped to a secondary profile/gamertag on the exact same Xbox Series X console; the secondary profile encountered the identical MUT server-side connection blocks.

Cross-Game Cross-Check: Successfully connected to and played College Football Ultimate Team (CUT) on this exact same EA account with zero latency or authentication issues.