Getting Errors: X Service Unavailable; Cannot Attach Device. Try Again LAter

Hi, I have had nothing but problems with my ReadyNAS'es. 

I recently purchased a second ReadyNAS RN102. Both ReadyNAS RN 102's are running on OS 6.6.0 and are on the same network. I have done everything I could to try and get ReadyNAS replicate up and going, but failed. Don't tell me to follow ANY basic steps. I have done everything (8.8.8.8, IPv6 disabled, deleted and readded the readyNAS'es to the ReadyNAS replicate, etc) and I always get the same error:

[2016-11-15 15:21:50] [Info] Replicate version: 1.3.0 build R2
[2016-11-15 15:21:50] [Info] Starting backup job "Data Backup [2016-11-10 11h 41m AM]"
[2016-11-15 15:21:50] [Info] Locking target folder: /data/Replicate-Test/Data Backup [2016-11-10 11h 41m AM]
[2016-11-15 15:21:51] [Info] Resume folder is "/data/Replicate-Test/Data Backup [2016-11-10 11h 41m AM]/2016-11-10 12-26 (failed)/data"
[2016-11-15 15:21:51] [Warning] Incremental not possible
[2016-11-15 15:21:52] [Info] p2p connect to nas-35-94-06 in 12239561 network
[2016-11-15 15:22:14] [Info] p2p connect to nas-35-94-06 in 12239561 network
[2016-11-15 15:22:27] [Error] Unable to connect to nas-35-94-06
[2016-11-15 15:22:27] [Error] Connect error code: -51
[2016-11-15 15:22:27] [Error] Please check source device is online and Replicate service is running
[2016-11-15 15:22:27] [Info] Unlock target folder: /data/Replicate-Test/Data Backup [2016-11-10 11h 41m AM]
[2016-11-15 15:22:27] [Info] Job finished

The only thing I haven't tried is port forwarding. Before I open ports and such, I need to know if there is another port other than 6300 that works with ReadyNAS replicate since I have two ReadyNAS'es and no proxy server.

Second, when I tried a telnet command from inside the network to either server with 6300, only one ReadyNAS responded. I noticed the other one has this error on the ReadyCloud page:



Yes, it has access to the internet. It can download apps and connect to ReadyNAS replicate. In fact, my efforts to replicate even create files on either servers, but doesn't transfer any files.

No, the proxy server is not on. I've tried a few different ports, but its currently on 6300 again.

The account email address blurred out there is not on any user accounts on the device.

I just can't understand why the services would be unavailable. I don't want to try port forwarding so I can use ReadyNAS replicate until I know I can access the machines properly from within the network so I can cut down on complexity and troubleshoot properly.