You can find out whether the X-Payments Cloud connector add-on is installed and enabled in your X-Cart 5 store by checking the section My apps of your X-Cart store Admin area:
In that section, type “cloud” or “x-payments” in the search box and hit Enter; as a result, you will be provided with a list of search results including the card of the X-Payments Cloud connector add-on. The card will show the current status of the add-on.
On a new X-Cart trial, the status will typically be shown as "Enabled" ("On"). It means that the add-on is already installed and ready to use:
If, however, the add-on is not installed in your store for some reason, you will need to install it from the X-Cart App Store. To install the add-on, follow the instructions from the section Installing Add-ons from X-Cart App Store.
After making sure the X-Payments Cloud connector add-on has been installed and enabled, you can use it to connect your store to X-Payments Cloud.