API returns "account not found" for valid L1 address with API keys (master and sub-account)

[danteskg]

🚨 Bug: API returns "account not found" for valid L1 address with active API keys

L1 Address (affected): 0x814BE07C8c73E8f16f0CfB2bBe5C42471Ac9665F

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📌 Description

I have an active Lighter account (master) with funds, and I also created a new sub-account. I generated API keys for both (indexes 3 and 4). However, when trying to query the API using the official Python SDK or direct REST endpoints, I consistently get the same error:

{"code":21100,"message":"account not found"}