Follow-up: this is still happening.
My Pro account is refreshed but every model fails. My free account works on the same PC/network, so this is not local.
Latest backend error:
HTTP 503 Service Unavailable
Reason: MODEL_CAPACITY_EXHAUSTED
Model: gemini-3-flash-agent
Message: No capacity available for model gemini-3-flash-agent on the server
TraceID: 0x7881850fcf6e8
Trajectory ID: 56a8a841-46c8-4aa3-86a3-600bcf7ce
Please check my Pro account routing/entitlement/capacity bucket.