I've had mine since Nov 2020, no issues with deletion. I think the trick is to have a CC on file or be charged at least one. I know I generated a few storage charges, ended up paying less than $2 but I think that has classified me as a 'paying customer'. However I would recommend always being prepared for eventual deletion. Make backups, record your process for setting things up so you can switch to a different provider should the worst happen.

They're 12-24, we use these at work.

This is insane, I love it.

Honestly if I had everything in docker I'd use traefic, but I found it horrifically complex to do simple things as soon as you need to branch off of your docker host. I've just started using Caddy and it is so user friendly I can't even believe it.