I've got a campaign with a responsive ad and another smart ad that isn't in a campaign - with both I can't see how to change the budget. The help text refers to mobile but, on my laptop, I can't work out the link to alter the budget. Where do they hide it?
On your laptop, hover over the campaign, you should see the pencil edit icon over the budget column. Click on it to edit the budget.
Ugh, was looking for a menu option and didn't see the pencil. Thanks! I've upped the daily budget, lets see if that gets the phone ringing!