Sites are up and writable, but cannot connect via SSH nor Webmin

I cannot connect via SSH (port 22) nor Webmin (port 10000) from a WiFi where I previously could.
Trying to access just times out.

How do I fix this? Running FreeBSD with EBS storage.

My page view counter files are still updating, so I presume I haven't run out of storage space.

Instance ID: i-02d845634dbecc4c5 (ninet)
Public IPv4 address: 52.42.165.107 | open address
Private IPv4 addresses: 172.31.23.217
Instance state: Running
Public IPv4 DNS: ec2-52-42-165-107.us-west-2.compute.amazonaws.com | open address
Private IPv4 DNS: ip-172-31-23-217.us-west-2.compute.internal
Instance type: t2.micro
Elastic IP addresses: 52.42.165.107 [Public IP]
VPC ID: vpc-35751951