I’d like to buy and insert into my payment categories to have a counter - down widget or app. Say you have 1000 tickets to sell and then you want the customer to know the current number of tickets and then once they buy x-number the tickets, the counter will show how many are left.
However, setting up the External URL requires specific technical knowledge. So, if you face any difficulties, please share a link to your source (a link to the page which provide the widget with the info about the number of available tickets) and our devs will gladly assist