All you need to get koms working again is the following:
Fiddler
Notepad
A(mostly) functioning brain
Step 1
open fiddler and find the most current version of checkkom & patchinfo for your server
to do that open fiddler and run elsword normally
save the page as checkkom.xml to your preferred location and do the same for the patchinfo.xml
then open checkkom.xml it with wordpad or notepad++, and you should see this then copy and paste the checksum in the line of edited kom
JUST Remove The Lines of Edited Kom in patchinfo you paste on the els folder,but make sure you save
STEP 2:
explanation below;
Now go to fiddler again and click AutoResponder tab on the right
once there tick the Enable automatic responses and the Unmatched requests Passthrough checkboxes
then click add a new rule
now go to the bottom in the rule editor and on the top bar type:
EXACT: and The Current version of your Checkkom & patchinfo
And on the bottom Bar type the location where you saved the checkkom
Click Save
and you are done.