Why can't customers select a payment method for orders?

[Synetix]

Hello I've been having a problem with collecting orders, when a costumer wants to buy a product somehow they can't select a payment method even if they do it won't be saved or anything they will enter it over and over and  it just won't work. Thank You 

[Zworthkey]

@Synetix 

Welcome to the Shopify community!
Thanks for your good question.
Sorry for that , you are facing issues,
Kindly contact to the Shopify Support team they will help you.
to fix out your all issues.
Check out this link:
https://help.shopify.com/en/questions#/contact

Let me know if you need any other help,
we are happy to help you.
Thank you.

[dropship_helps]

Hi @Synetix 

What is the payment gateway are you using?