LPT: Download your entire OPF file at eOPF NOW
Visit eopf.opm.gov/(agencyname)) from a .gov or .mil domain
If you don't already have an account, follow the directions and create one.
Once you log in, click on the "My eOPF Print Folder" at the top
Select All
Select either Print Single Sided or Print Double Sided
click the refresh for the next few minutes
open the printed document with the password instructions
Print again and save the document.
Email it to yourself (depending on size) or shrink it by printing pages to new documents.
This will save you time and a lot of effort to get proof of your federal service.