Instagram has minimal technical issues but it can throw users login issues at times. This most commonly occurs when you upgrade phones or you keep changing between multiple accounts and try to log in to Instagram.
Older phones may also encounter compatibility issues as they become outdated. Instagram can also do a forced log out and require a log in for an updated terms of service. In this case, you will need to agree to the updates in order to log back in to your account.
Before you dive into anything technical, do a surface level investigation. Are you typing the correct username and password? Instagram usernames begin with an @ symbol but you should not type this out when logging in to your account.
Look closely for typos in your handle and make sure everything is correct. After the handle is ready, clear the password field and type your password.
Make sure what you are typing is exactly as intended. Instagram passwords are case sensitive. If the log in fails and you are positive the username and password are correct, it’s time to try a password reset.
After go on to your Instgram app put in your usernme where the usernme column is and after insert your password the voila!