2checkout Recurring Payments

Proceed to Settings->Modules in HostBill, find and Activate 2checkout gateway
Under Vendor account number Provide your 2co account number - it can be obtained from 2co vendor area
Under Secret word provide word you've configured in 2co vendor->Account->Site management
If you wish to use 2co recurring payments (handled by 2co), provide your API username/password from 2co->Account->User management
If you wish to disable 2co recurring paymenents, tick Disable subscriptions
If you wish to one time payment if subscription is available, tick Disable one time payment
2co offers one-page checkout functionality, to use it, tick Use single page checkout
2co payment interface is in english, if you wish to change that provide language code from https://www.2checkout.com/blog/knowledge-base/merchants/tech-support/multi-language-options/do-you-offer-any-languages-other-than-english/ into 2co interface language
Copy module Callback URL from HostBill 2checkout module configuration, and paste it into 2co vendor interface->Account->Site Management->Approved URL
On the same 2co page, make sure to set Direct Return to Header Redirect (Your URL)