re: martamartoladas:
Were you able to make any setup attempts prior to this not working?
Instructions linked to the above article suggest several things to try
and assume that would be workable; yet there is another link inside
that link (above left to keynote) that tells how to use Keynote Remote.
This may have some magic properties that could make it work.
Or not quite that simple; & ideas may come out of this DIY mix.
• Use Keynote Remote to control your Keynote presentation - Apple Support
https://support.apple.com/en-us/HT204378
Just reading through here, since my Mac is on all the time, (except power outage
&/or routine restarts, etc) & had considered the effects of those earlier suggested
actions -plus- other article. 'Easy-bake' concoction, could need more shortening?
Not sure at what/when the 'Mac may need to use Wi-Fi' and that's suggested also.
Get Started with KeyNote Live can use iCloud, according to article, @ top of page.