Webmoney payment plugin adds webmoney support to Smart Subscriptions. Plugin configuration is minimal: only purse number and secret key are required. You have also to make sure that your Webmoney Merchant service configuration is compatible with the plugin. Go to purses list for your account and open settings of the purse you are going to use with Smart Subscriptions.
- Check that Secret Key has the same value as entered in plugin configuration
- You can leave Result, Success and Fail URLs empty, but you must check "Let to use URL sent in form" option, otherwise plugin will not work
- "Send parameters in the preliminary query" is not a critical option, yet it is recommended that you check it
- "Control sign forming method" - SHA256