Follow these steps from the printer web page (http://printer's_IP_Address) to:
Identify installed apps. Click on Apps.
Take note of ALL installed Apps listed below Installed Apps. Alternately, you can also click on Installed Apps to see an icon representation.
Backing up configuration settings. Click Export Configuration > All Settings.
Select Save File, click OK.
File contents should include:
LEGACY ID: HO4031
How to Export and Import User-Defined Configuration Settings on Most Lexmark Laser Printers and MFPs
This article shows the information required to escalate eSF apps‑related issues.