Dear hello,
If you actually not violating rules of OPENAI, send an email to OPENAI support team to lift wrongful ban, offering your real IP address, this will solve your problem.
Otherwise you need find ANOTHER VPN, not another node, server from same VPN provider.
Cloudflare bans RAM VPN, such as Microsoft Azure, Amazon Web Services(AWS) Cloud, Linode, and other VPS providers.
You can try connecting using non-RAM VPN, this will also solve your problem.