Hello.As far as I know, no.

I sent a notification about your question to the company employees, expect an answer from them here in the comments.

Hello,

If you can create your own button from paypal website, in this case you can add it into an HTML object with the code provides by paypal.

On my Paypal account I have no option for this kind of button !

Do you have a paypal link ?

Enjoy!
Axel

Hello Kim,

You said: "Paypal now has a buy now pay later option".

So you have this infomration from somewhere.. Me I never saw this one before. So check on paypal website 

Enjoy!
Axel

Hello Kim,

Ask to Paypal now.
it's not a WSX5 isssue ! Or maybe there is some restrictions into your country/region.

At the bottom of the page of the link send by John previously  there is these informations.

*Pay in 4 is available upon approval for purchases of $30 - $1500. Pay in 4 is not currently available to residents of New Mexico, North Dakota, South Dakota, Missouri, Wisconsin, or any U.S. Territories. Loans to California residents are made or arranged pursuant to a California Finance Lenders Law License. PayPal, Inc. is a Georgia Installment Lender Licensee, NMLS #910457. Late fees may apply for missed payments depending on your state of residency. When applying, a soft credit check may be needed, but will not affect your credit score. You must be of legal age in your U.S. state of residence to use Pay in 4. Offer availability also depends on the merchant. Offers are not pre-approved offers or firm offers of credit.

Enjoy!
Axel

Hello Kim

I have just received this one from Paypal ionto my email... 

So this kind of payment semmes no (maybe) available for everyone. !!! 

If you find some answers are good to your issue please note them like good (could be useful for other users later)

And don't forget to close your post. 

Enjoy!
Axel