Unfortunately the pool is nearly at its capacity. The Gridcoin network allows a maximum magnitude of 20,000. Since the pool is in the 19,000s I have turned off new signups to allow some
The good news is there is already a 2nd pool setup and ready to take on more researchers. However, the Gridcoin network needs to create a superblock before the new pool
can be accepted into the network and start earning rewards. This normally happens every 24 hours, but there is an issue that is preventing the super block from being created.
The dev community is hard at work investigating the issue. When the superblock finally happens, sign ups will be open again for the 2nd pool.
Thanks for your patience...