Delay/Cookie lifetime

After examining your code I see it defaults to 1 year expiry, so it's OK for my purposes for now, although for future campaigns a shorter option might be required.

Hi @mattea.turnbull!

Thanks for your input! I finally got around to looking into it. Would you kindly take a look at the issue fork? I have added a number-input for the delay to the settings form (under Visibility). The value you enter there is then handed over to the front end script.

Looking forward to your feedback!