Renewing LetsEncrypt certificate issue

I would suggest asking that question on a lego support forum or logging an issue on their tracker.

it really has nothing to do with Lightsail.

I was able to solve this problem by downloading and installing the new lego client

I am not an expert on Let's Encrypt, but depending on the shell you are using the double quotes may not be sufficient to escape some of the special characters in that command line. You might try using single quotes around the values:

sudo lego --tls --email='email@domain.us' --domains='domain.us' --path='/etc/lego' renew

Also, as others have suggested, the Lego forum might be a better place to get support for that tool.

I hope this helps!

Donley