My current coding project requires API Tier 1, and the free service can no longer meet my coding needs. However, I have already paid $30 for five hours, and my level is still at the free stage. Why haven’t I reached Tier 1 yet? I know there is a delay but it takes too long… I also try to ask for help to openai team, but no one response me until now.
I think Tier changes automatically as your service consumes API response. Have you tried running your code? Are you getting any Error respone? Because I remember once I started with Tier 1 and now I am at Tier 3 and never had this issue.
same for me, I already put money and I already spend 10 usd and my tier continue the free one, support also didn’t reply me
I have same problem add more than 30USD spend more than 13USD and still on free TIER
Same here. 70$ spent, FREE Tier still. Help. 
I am also stuck on free tier