Account appears to be eligible in terms of usage, but Google hasn’t automatically promoted it to Tier 2 yet.
ID - 01E438-68B605-11C6..
PROJECT - FACELESSYT
Current Tier: Tier 1
Monthly spend: ₹17,604.36
Spend cap: ₹50,000
First successful payment: 3 days ago (you mentioned this)
Still limited to Tier 1 quotas
Please upgrade to Tier 2.