No. The file is cryptographically signed. Any change, even adding a space, invalidates the signature and REAPER will reject it. This is by design.
“The license file is invalid for this version of REAPER.” reaper-license.rk
If you lose your hard drive or reinstall your OS and lose the reaper-license.rk file, you do not need to buy a new license. Cockos keeps a database of purchasers. You can simply visit the Cockos website, navigate to the "lost license" page, and enter the email address you used to purchase the license. They will automatically re-send the reaper-license.rk file to that email address. This is by design
file and need to apply it to a new or existing installation, follow these steps: Import via the Menu Open REAPER. Navigate to License/Registration You can simply visit the Cockos website, navigate
“The license file could not be imported because it is corrupt.”