Yes! Thank you, it worked Instructions should have included this magical word (clipboard). Haven't struggled to install a license before, so was quite surprised at this method.
Orig: "To apply the license, please copy the licensing information as is (including the three === symbols at the beginning and the end) and launch 3DCoat As well you can download your license file in your account".
My version of instructions: "To apply the license, please copy the licensing information as is (to your clipboard) ensuring you include all the information starting from the three === symbols at the beginning and at the end, and then only launch 3DCoat."