1. You can choose not to disclose your identity, but you must provide accurate and up-to-date information for Instagram (first of all, registration information). That is, to indicate someone else's or non-existent phone number, email is prohibited.
2. You cannot pass yourself off as another person. Not even a joke. Fraught with account blocking.
3. It is forbidden to buy, sell, donate (and even not inherit) a username on Instagram. Any part of your account.
4. One of the not most obvious points in the rules of the social network. You cannot use domain name or URL in username without written consent from Instagram.
Violation of this paragraph is most often revealed when you add a site address identical to your existing account name ... As a rule, the entire account is not blocked for this. Usually they block the ability to write comments, arguing that your account is suspected of violating the rules of the social network.
Remember what you call your account, so it will work for you, so pay special attention to the nickname. And if there are problems with blocking, write to us - link in the profile header