Before attempting any of the suggested fixes, be sure the issue isn't with the app's primary server or something internal to your device. If the issue is with the server, you'll have to wait until the company fixes it. If, on the other hand, the problem is with your device, you can use the methods listed below to fix it. However, try putting your iPhone in flight/airplane mode and then turning it off again to see whether the problem was caused by an internet issue.

AOL Mail down difficulties can be fixed with a few simple hacks.

• Close the AOL Mail app completely - Close the AOL Mail app completely (together with any other apps or programmer running in the background), then try to launch it again.
• Check for app and system upgrades - Go to your device's app store to see if the AOL Mail app has been updated. Visit your device's settings menu to check for system updates.
• Clear cache and data - Cache and data may usually be cleared through your device's settings menu. This step helps clear up space by removing temporary files.
• Uninstall/Reinstall the AOL Mail app - You can uninstall and reinstall the AOL Webmail software on certain devices to help resolve any issues.
• Restart your device - Restarting your smartphone will help you refresh the entire device, removing any unneeded apps running in the background that may be interfering with the operation of other apps. It also re-establishes the internet connection.

F.A.Q:

Steps to Resolve Common AOL Email Login Issues

AOL MAIL LOGIN ACCOUNT CREATING AND MANAGING GUIDE

How to Use AOL's Webmail

AOL Webmail Basic Version: How to Use It

While creating an account with Facebook it requires an email address for verification of the account and for the recovery of the account also. People generally forget about the credentials for their account but Facebook makes it quite easy to get back the access of the account. If you provided the yahoo mail as the email which is a very popular email client being used widely then you can easily get access to your Facebook account. This article is all about the steps to recover Facebook account using Yahoo mail. 

Steps to fix the above mentioned issue

To get the access of your account via yahoo mail please follow the following steps:-

• Step 1:- Go to the Facebook login page
• Step 2:- Click on the forgot password link. It will redirect you to the account recovery page.
• Step 3:- Enter the yahoo mail that you've provided to Facebook while account creation.
• Step 4:- Facebook will ask you to select the ways to receive the verification code. Select the email method here and click next
• Step 5:- Facebook will send you the code to reset the password in your yahoo mail inbox.
• Step 6:- Login to the yahoo mail from yahoo mail client and get the verification code from the inbox.
• Step 7:- Enter the verification code in the text field and click next. 
• Step 8:- Facebook will verify the code and redirect you to the page to reset the password.
• Step 9:- After successfully changing the password you can log in again into Facebook with your new credentials.

These are some easy steps of how you recover Facebook account via Yahoo Mail. If you still feel that there is some problem, you can contact the tech  support for the same.