Article in English: Open the Instagram app and try logging in with the correct credentials. If you see a message which says "Your account has been disabled" (or something similar) appear after tapping Log in, Instagram has disabled your account for violating the Terms of Use. If you just see an error message (e.g., "Incorrect password or username"), your account hasn't been disabled by Instagram. Try troubleshooting for a fix. Go to https://help.instagram.com/contact/606967319425038 in your computer's web browser. You can use this form to request that Instagram allow you to access your account. In the "Full name" text box near the top of the page, enter your first and last name as it appears on your Instagram account. Type your Instagram username into the "Your Instagram Username" text box. Do so in the "Your email address" and "Your phone number" text boxes, respectively. In the last text box on the page, type in a brief message explaining why you think your account should not be deactivated. When writing your appeal, remember the following guidelines:  Explain that your account was deactivated, and you believe the deactivation to be a mistake. Avoid apologizing, as doing so implies some form of fault. Keep your tone pleasant, and refrain from using harsh language. End your appeal with a "Thank you!". It's a blue button at the bottom of the page. Doing so will send your appeal to Instagram; if they choose to reactivate your account, you'll be able to log in when notified. You can repeat the appeal process several times per day until Instagram reaches a decision.

Summary in Vietnamese:
Xác nhận tài khoản của bạn bị treo. Gửi đơn khiếu nại cho Instagram. Nhập tên của bạn. Gõ tên đăng nhập. Lần lượt nhập địa chỉ email và số điện thoại. Nhập yêu cầu khiếu nại. Nhấp nút Send màu xanh dương ở cuối trang.