Bought a fuzzypn NAT device, can't connect to SSH.

admin

Protocol     Source IP     Source Port     Destination IP     Destination Port     Operation   
TCP     157.10.53.*     19595     192.168.30.244     19595     
TCP     157.10.53.*     19501     192.168.30.244     22   
TCP     157.10.53.*     22     192.168.30.244     15902   
TCP     157.10.53.*     15911     192.168.30.244     22
*(IP address hidden for privacy)*
As shown, I've set up port forwarding using these rules. Normally, either 15902 or 15911 should allow SSH connections. However, I've tried both and it's not working. Could you please assist me with the correct configuration? Appreciate any help from experienced users!