I got an email from Cloudflare, stating that they are retiring Cloudflare v1 API calls:
"Hi there,
You are receiving this message because we determined your api key was used to make v1 Client API calls in the last 30 days. On June 4, 2018, the v1 API will be retired, meaning all calls to the API endpoint (https://www.cloudflare.com/api_json/) will be rejected from that point forward.
In 2016, Cloudflare announced the deprecation of our v1 API in favor of the v4 API. You can find instructions on migrating from v1 to v4 in our migration guide: https://www.cloudflare.com/migrating-to-v4/
Please contact Cloudflare support with any questions you may have.
Thanks,
Garrett Galow
Cloudflare"
I got an email from Cloudflare, stating that they are retiring Cloudflare v1 API calls:
"Hi there,
You are receiving this message because we determined your api key was used to make v1 Client API calls in the last 30 days. On June 4, 2018, the v1 API will be retired, meaning all calls to the API endpoint (https://www.cloudflare.com/api_json/) will be rejected from that point forward.
In 2016, Cloudflare announced the deprecation of our v1 API in favor of the v4 API. You can find instructions on migrating from v1 to v4 in our migration guide: https://www.cloudflare.com/migrating-to-v4/
Please contact Cloudflare support with any questions you may have.
Thanks,
Garrett Galow
Cloudflare"