Replicator Mini+- Printer Offline

I got a Makerbot Replicator Mini+ for free a while back and I used it a 2-3 years ago last and it worked fine but now the printer won't connect. I got past the login issue and downloaded the old software but now it says "printer offline" and "export only." I'm using a USb and I don't know how to use the other methods. Any help would be appreciated!