Peplink Balance routers allow a custom DynDNS server in the Dynamic DNS Settings of each WAN connection from firmware 6.3. With DNS Beacon your network stays reachable under a permanent hostname even when your WAN IP changes. Here's how to set it up.
Network → WAN → [connection] → Dynamic DNS Settings
From firmware 6.3 you can specify a custom DDNS server under Dynamic DNS Settings. The custom option speaks the DynDNS protocol — enter the API host as the server. Username is your email, password is an API key.
Create a free DNS Beacon account, add a hostname and generate an API key — then come back and finish the setup above.
Create free account