I have the only pre-reforged clients and my Battle.net app is updated but when I go to battle.net in game it says the servers are no longer available or something. Do I need to download reforged or anything or am i stuck with offline until I buy reforged?!
The old Battlenet servers that hosted the pre-Reforged client are indeed no longer available. They were shut down when Reforged was migrated to the modern Battlenet servers.
The only multiplayer that may still work in the pre-Reforged client is through LAN, but I haven’t tried it to know for sure.
lan will still work but, it is your only option if you do not want to register your keys on the website and play on the reforged servers. it does require bonjour however.