When I try to delete a Google Cloud project, I get this error:
You are not allowed access: the project cannot be modified by the end user.
However, I can confirm I am logged in as the owner of the project, I checked permissions and this account is the only linked account for that cloud project (and is owner).
When I try to disable billing (as I suspect you can't delete a billing-enabled project), I get a similar error:
Any suggestions? Thanks.