LOGic does its lookups from data entered for prior QSOs and from callbook data stored on your local disk.
As far as I know, it can't do the lookups via an online database such as QRZ.com
. Try this:
On your Log form, click the Log button that is in the upper-left of that form. In the drop-down menu that appears, select Setup (down at the bottom) to open the Log Form Setup window. Click on the Callbook tab and make sure that "Auto callbook lookup?" is set to Yes. To the right of that are several checkboxes that let you choose what gets looked up and filled into your form.
To refresh the callbook data that is stored locally on your disk, go to the main menu and choose Tools, Internet, Import FCC USA (K) Callbook (and/or choose one of the other Import options for foreign callbook info).
If this info doesn't help you solve the problem, you may want to post your question over on the LOGic forum:http://www.hosenose.com/Forum/
ETA: I just found this over in the forum, so I guess it can do online lookups via QRZ.com:http://www.hosenose.com/forum/yaf_postst1447_QRZ-COM-web-site-and-LOGic.aspx