Using FTP client copy the folder wa-plugins in the root of your website.

If you need to replacement file, you need to agree.

Go to admin panel, open the "Store", go to "Settings → Payment".

Hover over "Add payment method" and select PayKassa.

Fill in the parameters of the payment method.

Tick "Enabled".

Enter the name of the payment method.

The URL of the logo is set by default, but you can specify a different link for the logo.

The description of the payment method you have already entered by default you can change this description, it will be displayed when selecting payment method by the buyer.

Shop ID - your shop ID in the system paykassa.pro (can be found in your account).

Secret key – secret key of your shop in the system paykassa.pro (can be found in the personal Cabinet).

Test mode – tick to test payments.

Click save.

Plugin PayKassa should appear in the list of payment systems.

Go to the module configuration PayKassa.

There will be three additional fields.

Result URL, Success URL and Failure URL addresses to interact with the payment system PayKassa. The specified in these address fields and copy and paste into the appropriate fields in the store settings on the website paykassa.pro.

Tap save to store settings on the website paykassa.pro.

Click save in the plugin settings PayKassa for your store.

Module PayKassa for CMS Shop-Script 7 configured.