Hi i read your requirement :
I need to include some fields in the magento checkout.
Subscribe: yes or no
if yes have the period of time in days (15, 30, 45)
If not subscription, integrate with the payment gateway Vind and follow the life of the request.
If signature yes,
Have a form with credit card details:
Name, card, date, and CVV all encrypted, and learn how to decrypt.
Place order pending payment.
I will do the job of offline payment.
Teaching how a Pendant order go to Payd
As a Magento 2 Designer/Developer are expert at offering:-
* Web Design & Development,
* Magento 2 Consultation,
* Custom Magento 2 Theme Design
* Magento 2 Template Design & Redesign
* Magento 2 Template Integration
* Magento 2 Plug-In Integration
* Magento 2 Shopping Cart Design
* Magento 2 Maintenance Service
* Invoice issue on magento 2 sites
* Onestep check out issue on 1x and 2x with Amasty module
* layered navigation work on magento 2
* Mega menu work on magento 2
* Magento 2 speed optimization work
As a Magento 2 developers have knowledge:-
PHP5, CSS3, HTML5, j query, JavaScript, Ajax, Responsive theme, Custom module development, Custom shipping method, Shopping cart development, Theme design, Magento 2 upgrade, Magento 2 extension development.
Thanks
Krunal