I'm trying to create a custom domain forward and when I access the login uri it return me a success message but nothing change in terminal, it give me the same warning about unregistered ssh public key:
To request a particular subdomain, you first need to register your SSH public key.
To register, visit one the addresses below to login with your Google or GitHub account.
After registering, you'll be able to request your subdomain the next time you connect
to Serveo.
I'm running the following command:
ssh -R testingsubdomains:80:localhost:3232
serveo.net