No license key with vendor code found

After intalling the product, Trelis opens the registration window where there is no option for the trial registration. (attached the file.)

How can I register the trial?

The 30-day trial contains a provisional license and does not need a product key to activate it. If the product activation window opens with an error message, it is most likely that the license manager did not install properly.

The “No license key with vendor code found” error is sometimes because of an anti-virus software blocking the license manager installation. Try deactivating the anti-virus software, installing Trelis, and then reactivating the anti-virus software.

Also, you may try to reinstall the license manager (haspdinst) with the -i switch.