Oneclick checkbox not visible for guest-users | Magento 2

Once integrated the HiPay module for Magento 2 the oneclick checkbox will be not visible more for guest-users. Asked for this behavior to ECPO:

HiPay Console
Internal documentation for HiPayers
Technical announcements and release notes
Integration toolbox
User guide for HiPay Professional
Account management
- HiPay Marketplace – KYC/KYB documents and bank information management
- Account management – General
Market insights
- Guides
Starter guides
- HiPay Marketplace - Cash-out
- HiPay Enterprise - Cash-in
FAQ
- FAQ – Merchants
- FAQ - End users
Pagamenti in negozio
- Supporto tecnico