Hi @salvatorefresta please i’m also haveing same issue.
I’m working on a multisite installation, i was able after some try to connect plugin with cloudflare using ACCOUNT TOKEN instead email/key api on the first website.
But using the same credential in the second one, we still get this error :
Error: Invalid request headers (err code: 6003 )
Credential are 100% ok, we get same error try to using api key and api token
