Not a very good idea. It is best to use a full keyboard.
But if you use the VI editor, I think that might be able to run it without needing to press CTRL or ALT.
Look up all the VI commands that you would need before you use it.
Like:
moving around using the arrow keys
[to get to the start of 127.0.0.11]
deleting the next 10 spaces= 10d{spacebar}
[to delete "127.0.0.11" 10 chars long]
switching to insert mode= i
[press the letter "i"]
exit insert mode= Esc
[press the Escape key]
saving the file= :w{ENTER}
That's a colon ":" then "w" then {Enter key}
exiting the program= :q{ENTER}
That's a colon ":" then "q" then {Enter key}
But this may all be in vain if the file can't be edited by a normal user.
Back to the first problem: You need to be an admin of the system / root user to fix things.
OK IP confirmed.
Step 2: Validate the ACME client was designed to work on this system.
What is the name of the ACME client (and version)?
Where did you get the client?
Was there a guide you used?