Really hope you took screenshots of your Beta guild members because with the recent patch guilds have been wiped in order to implement new changes in the guild system. Otherwise, feel free to create a new guild and hopefully some people will catch up, or simply start from scratch.

There are plenty of beta testers to recruit, and more players keep getting beta invites as we speak. I have met a few in-game who just got the invite and will gladly join a guild for guidance and support on where things are and what to do.

Blizzard Quote:
There is some maintenance going on right now for the beta realms that will wipe all existing guilds in beta. Several things have changed with the guild system since it was first avaialble and we want to ensure that all testing efforts from the beta realms are with guilds that started from a good place.

New guilds can be made after the maintenance has ended.

We’re sorry for any inconvenience this has caused. – source