I have a network currently consisting of 83 PCs (just added four new PCs). I was only licensed for 80 ESET clients, so I purchased five additional licenses. I can't for the life of me figure out how to add the five licenses to the 80 existing licenses. I tried using the "renew license" feature, but I get an error message saying "This license key is not issued for NOD32 Remote Administrator! (20081,2)"