It’s not possible to display the number of downloads with shortcodes, it can be shown by customization, you may knock to the customization team for that.
This kind of problem is usually caused by either a conflict with your theme or with another plugin. The best way to determine if the issue is being caused by temporarily disable other plugins for checking, you may also switch the theme to another for checking.
“Is there a way to dis-allow users with an account on the site, who are not members of a plan?” – For that, you need the Advanced Access Control Add-on.
Allow Access option is to give download access to a certain group of people like author, editor, subscriber. Suppose you want to allow download a package only for the editors, you can do that with Allow Access option.
Please simply click the Save Settings again for the license key option from Downloads > Settings > License, which will regenerate the access token. Finally, go to plugins page and update will work fine this time
