To obtain a multi-site license you must negotiate a special offer with
codaone, the developer of Community Store Payments with Paytrail.
Click below to send a private message and begin the process. You may need to sign in to community.concretecms.com before you can message this user.
Adds Paytrail payment methods to your Community Store.
You need to have contract with www.paytrail.com/en/ to make use of this module.
For testing purpose see credentials and info here https://docs.paytrail.com/credentials/