I already told about this issue, but now I can no longer wait because it is starting to be annoying.
I use custom profile, but when I set one in listing and start it, eBay does not recognize it and creates a new one. The problem must be in GS, if I revise those listing from the application (changing nothing!) eBay now recognizes the profile and chooses the correct one.
This problem is serious if you have many listings. When postage fees changes or if I want to change them, I modify the original profile, but changes are not applied to these profiles eBay created after it did not recognizes (as I suppose) listings created with GS.