In the Add Credit section of servers, there would be a 1 day option of server credit for 9-10 ads. You then would be prompted to watch 9-10 ads for 1 day credit.
Credits to @TheFoil for this suggestion:
Or an option for 2 hour credit per ad.
One day/2 hour credit cannot be used to create new servers.
You can only watch ads every 8 hours, while you can only watch 2 hour credit ads every 1 hour and 30 minutes.