Account verification by email.
I uploaded one photo, test photo of some fireworks.
About an hour late, the account is suspended.
Email states;
Your Instagram account has been suspended. This is because your account, or activity on it, doesn't follow our Community Standards on account integrity.
If you think we made a mistake, you have until December 31, 2025 to appeal.
If you don’t take action, your account will be permanently disabled.
There's a link to verify, which has only one way to verify, by providing a phone number.
Phone number is the gold standard for collating information from third parties and although I may be wrong, I suspect this is the real reason for suspension, as a device to obtain phone number.
The text "Community Standards on account integrity" is a link.
This goes to a page which forces you to accept all cookies.
On that page is generic information - there is no way to make the appeal mentioned in the email. I can see no way to make that appeal.
Note the text says the account will be permanently disabled, not deleted, so Instagram are not deleting what they have; only permanently disabling the account.
Searching on-line, Instagram gives the following instructions to delete an account;
You can delete your account by going directly to Accounts ownership and control settings in Accounts Centre. Or you can follow these instructions:
This is not possible, as it is not possible to log in (logging in takes you to the page to provide a phone number for authentication).
Finally, the email address which sent the email is a "no-reply" address.
[1] I have to take issue with the word 'community' here. These are not standards agreed upon by the broader Instagram user community, but determined entirely top-down by corporate. A more honest name for them would be "corporate rules".