Google Merchant Center - Checkout URL and eWallet?

Hello,

Can anyone help with getting the checkout URL to be live on Google Merchant Center?

https://support.google.com/merchants/answer/13945960?hl=en

I've tried various versions of the checkout page URL but I cannot get it to work.

Also related to the checkout page, I believe Google Merchant center cannot find/index the eWallet methods because I keep getting an error that I have no eWallet methods (I use Stripe and Paypal). 

https://support.google.com/merchants/answer/14187023?sjid=5556330214483237363-NC

Does anyone have any experience with getting this to work?

Thanks,

Amanda

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