To connect AOL mailbox to E-Warmup, you can follow these steps:
To connect your AOL Mail to E-Warmup, you’ll need to create an App password. Simply head over to your mailbox account and click “Account Info”.

Next, go to the Security tab and click "Generate app Password" from Other ways to sign in tab:

Generate an app password and save it.

Use this app password to connect your mailbox to E-Warmup.

Connect & DONE !!