On 64-bit Windows, 32-bit applications only show 32-bit extensions, and 64-bit applications only show 64-bit extensions.
A 64-bit application that installs shell extensions should also install the 32-bit versions, but this is sometimes not done. So if a program installs only 64-bit shell extensions they will not show up in 32-bit applications like XYplorer. Often this can be fixed by installing the 32-bit version of the application "side-by-side" with the 64-bit version.
XYplorer has another solution, or rather two solutions: