install & set up procedures:
1. download addon, install it via ACP > Add-ons
2. go to Setup > Payment profiles
Add payment profile
Title: FreeKassa RUB
Display title: leave it empty
Merchant ID: input your merchant id (3-5 digits)
to get merchant id visit
https://merchant.freekassa.ru/
Secret word 1: input your SECRET WORD 1
to get secret word 1 visit
https://merchant.freekassa.ru/settings
Secret word 2: input your SECRET WORD 2
to get secret word 2 visit
https://merchant.freekassa.ru/settings
Save!
3. go to
https://merchant.freekassa.ru/settings
NOTIFICATION URL input callback URL:
SUCCESSFUL PAYMENT URL input:
https://
yourdomain.com/
URL OF THE RETURN IN CASE OF FAILURE input:
https://
yourdomain.com/
Save changes!
4. set up user upgrades & select payment method, done!