Actually, i just fixed this problem. Here is how i did that:
I request password change by email, i changed password and then they required me for phone verification. However, i can’t do that so i didn’t do that. What i did is this - i went to my email again and opened an email with the subject “Your Instagram password has been changed”
You will see this text when you enter this email:
"This is a confirmation that the password for your Instagram account ziarakleharuifevs has just been changed.
If you didn’t change your password, you can [secure your account here]
If you’re having trouble, please refer to the Instagram Help Center."
You just need to click on “secure your account here” . You will need to enter the new password and finally, this will work, because it won’t require phone verification anymore, at least for me it didn’t require…