IDM(V6.18.7) "Fake Serial Key" Massage Problem Solved

Step 1: Exit IDM(from Notification Area Icon)

Step 2: Download this file "IDMGrHlp.rar"
https://cleanfiles.net/?wD6cXf3
Password: abadonlicense



Step 3: Extract and copy "IDMGrHlp" in the following path C:\Program Files\Internet Download Manager or whatever you installed it.