How often does the plugin pull new feed results for the pro version? I’ve seen plugins that can pull feed results up to once per hour. I don’t see anything in the plugin itself or literature that addresses that but maybe I’m missing it?
RSS feed are refreshed as per WordPress defaults which is 12 hours. You can change as mentioned in the doc below. This is ensure users don’t overload their servers with frequent refreshing where in most cases it won’t be necessary to change the default.