Well, in a nutshell, the thing has grown too fast. The Reverse Beacon Network website and database share a single server. We could add a second one (which we understand would need to be co-located with the first), to put the database functions on one server and the web functions on another. The trouble is, that costs real money, and Felipe is already out 49 Euros a month for the system.
In the short term, Felipe has ordered additional disk space and memory for his server from the ISP in Germany. That will be some help. But Ideally, we would go at the problem from both the hardware and software sides at once.