When AOL mail is not getting emails on the outlook or mozilla thunderbird. It means, there is something wrong with the user account or settings. here are the guide to fix the problem.
First of all, you need to check the filters and forwarding settings. Delete the filters & forwarding settings.
Go to the spam settings and turn off the spam settings. In case, if you are still not getting emails. you need to set the spam settings on the low level.
Sometimes, AOL mail is not getting emails because of the browser problems. probably, the browser is having trouble in loading the account. So you need to clear the cache and cookie files. now reload the account. let’s see if it is working fine for you now or not.
Let’s Delete the current accoutn and then re-add the mail account again.

Once you will make these changes into the AOL Mail account. it will start working fine for you. in case, if you need more help. please visit: AOL mail not getting emails