Error in Woocommerce checkout phone field

Hello, I have a problem with Woocommerce, on a page where I have installed the theme enfold, I have several payment gateways and all work well except one, the payment method Klarna, I have been consulting in WordPress support and indicate that it could possibly be due to an update of the theme, I have installed version 4.8.8.1.

The error is that when a customer chooses to pay with Klarna, shows an error with the phone field, this on the website: https://www.shopallieb.com/ Klarna is only enabled to sell in the United States and according to Woocommerce support may be due to the Avia Framework, I send a link to the capture of the answer https://prnt.sc/lRXI5gJhMAh8

Here the question is if I have to necessarily update the theme or if there is any solution that I can implement with my current version, the page works perfect only I have that problem and it is very important to solve it, if you can do a test buying a product and make checkout, you will realize that gives the error with the phone field.