To start, you will need the MySql .Net connector. The version required will depend on your server.
LogViewPlus is built with the .Net Framework 4.7.2, so you want the 4.5.2 version of these assemblies which, by default, is installed here:
C:\Program Files (x86)\MySQL\Connector NET 8.0\Assemblies\v4.5.2
Copy and paste all *.dll files from that directory to:
%AppData%\LogViewPlus\DbProviders
Your connection string will depend on your server configuration, but we test with a connection string like:
Server=MyServer;Database=MyDatabase;Uid=MyUser;Pwd=MyPassword;
Finally, make sure that plugins are enabled and restart LogViewPlus.
Hope that helps,
Toby