WooCommerce Stripe Payment Gateway - "Country availability" changes are not saved

Overview of the issue

Currently it is not possible to save any changes in the Country availability of your Stripe settings when using WooCommerce Multilingual and WooCommerce Stripe Payment Gateway.

Workaround

Our developers are aware of this situation. In the meantime, you can consider doing the following:

1. Temporarily install this plugin: https://wordpress.org/plugins/wp-rollback/
2. Go to Plugins → All plugins, search for WooCommerce Stripe Payment Gateway and click on Rollback.
3. Select version 5.7.0 and click Rollback.
4. Return to the Stripe settings and make your desired change under Country Availability in WooCommerce → Settings → Payments → Stripe.
5. Return to Plugins → All Plugins, you can update the stripe plugin and the changes will stay saved this time.