Thanks for reaching out, its great to see posting again in the community.
I would like to confirm which account id / name is the “non-organization”, as there are 2 accounts related to your profile.
I believe its account id1191233, which is named “Singapore Press Holdings_3”.
If the above is correct, there is fast self service solution you can avail of. As this account is a V2 account, please follow the steps here Downgrade or cancel account/organization | New Relic Documentation.
Please let me know if this is correct and that the self service solution was helpful. Should you have further questions please do let us know.