There are two Philips head screws that hold the inside cover in place; a manual screwdriver is better than a power one. The screws are positioned close to the 12 and 6 o'clock (12-hour clock) positions around the lever handle. Thus the top screw is below the manual lock; there may be a cover partially hiding the fastener. The manual for the FE595 is available from Schlage here: https://www.schlage.com/content/dam/sch-us/documents/pdf/installation-manuals/23780042.pdf . Make sure to look at the picture for your lock since the manual covers at least three models of keypad locks. A better picture may be in the installation guide here: https://images.homedepot-static.com/catalog/pdfimages/cf/cfae64fe-e7be-4146-bc26-4803ec302d5e.pdf .

Try carefully running a utility knife or other thin blade between the inside cover and the rest of the lock housing on the door. You may have some dirt sealing the two sections of plastic together.

I hope this helps.

Cindy Wells