Woocommerce All In One Cart, Mixing with already used cart

Hello everyone,

I hope you’re all doing well. I’m facing a bit of a challenge with my online store, and I was wondering if I could get some assistance here.

I’m in the process of trying to remove my old cart system, and I decided to use Checkout Manager for the new one. However, when I remove the Checkout Manager, I encounter a few issues:

Billing Information: I want customers to only fill in billing information for two specific products, and for one of them, I only need them to provide their name and email. How can I customize the checkout process to achieve this?
Language Buttons: Another problem I’m facing is that the language on the cart buttons is not changing to English. I want the checkout process to be in English, but it seems to be sticking with another language. How can I change the language on these buttons?
I’d appreciate any guidance or advice you can provide on these issues. Thank you in advance for your help!