The beta version is just for fun, it is not intended for serious gaming.
Try WoG Folder – online source of Heroes of Might and Magic mods (not only Heroes 3 mods, but not Heroes 6 😀 ) and various goodies (like “Did you know” series) that I have managed to collect over the last 10 years for everyone who contributes to the running of the Heroes 3.5 Portal.