Hello Options marked with red square are stored in the PSPad_MU.INI file next to PSPad.exe You can modify it starting PSpad as administrator or modifying PSPad_MU.INI manually.
There was a bug in the 5.0.3 version, what disallow to edit some options. This bug was fixed in 5.0.4 builds - available in the PSpad developer forum. -- <https://forum.pspad.com/read.php?2,73543,73546> PSPad freeware editor https://www.pspad.com
