I created one. Distributor Certificates are only one on one between a specific watch and specific computer. When you upload to the store they are replaced with Samsung Distributor certificate for testing and distribution.
So you have to have one to build to create the binary. And that is the issue. It may be since I have no issues the US seller portal has a US certification URL and the rest of the world has Korean and that is why I am able to do it and others aren’t .
Resources not found are generally a missing or corrupted file (image or font file).
Some times this is an issue with the AOD so check that to see if it lists a file that isn’t there.
If that isn’t the issue make a copy of your .gwd project file rename your .GWD project to .zip you can open the project and inspect it. Usually you can figure out what is corrupted or missing.