Follow these steps to install and launch the Sylvania Launcher on your Linux system (Ubuntu/Debian/Pop! OS).
sudo dpkg -i sylvania-launcher_2.5.0_amd64.deb
sudo apt-get install -f
To update the launcher, download the new version and reinstall it over the old one.
sudo dpkg -i sylvania-launcher_2.5.0_amd64.deb
Your settings and WoW folder path will be preserved.
Once installed, you can launch Sylvania from your application menu.
The launcher uses built-in Wine to launch the game, you don't need to install it manually.
Make sure to give write permissions to the game folder so patches can be applied.