Drupal Ubercart PayPal integration - published IP ranges for API services

I have a Drupal 7.59 website.
July 1, Paypal made changes that disconnected my Ubercart shopping cart from Paypal.

This is what it PayPal says:

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To support PayPal’s ever expanding global footprint, we have updated the published IP ranges for API services. Customers who choose to list the API service IPs will need to update the ranges allowed. Failure to update your allow list could result in loss of ability to connect to PayPal API services.

What are the IP addresses for PayPal NVP/SOAP servers?
When API (Application Programming Interfaces) calls are made to the NVP/SOAP servers, PayPal strongly recommends that you use Domain Name Service (DNS) results with the default Time To Live (TTL) values, to determine the IP addresses of our servers.

PayPal does not recommend adding IPs to an allow list. If you must allow list the IP addresses for any of these domains, use the following ranges:

173.0.80.0/20
64.4.240.0/21
64.4.248.0/22
66.211.168.0/22
91.243.72.0/23
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Can you fix this?

I'm not sure if it will be a problem for you, but my website sells "adults-only" content?