How to Recover a One Month Old Domain - IONOS

As you may already know, IONOS offer a shared hosting plan with a free .COM domain for 6 bucks. Yes, that's super cheap.

As many of the reviewers mentioned, the renewal fees and other extra fees are super high on IONOS. So, what I did is, canceling the auto-renewal of the site and add a reminder to transfer it to Cloudflare later. And, I start getting some significant traffic for the site.

After a month, they have deleted my whole account. Now, I can't even access my domain. As I know, according to ICANN, they can't restrict me from accessing my domain like that.

Is there a way to get my domain back?

Contact them and ask how can you manage your domain name.
Maybe that worth to take one more month after which you will be able to move your domain name to new registrar.