Hello.
As we have checked issues you mentioned, we haven't noticed these issues to be reproduced from our side:
1. $0.00 is not shown twice:
View attachment 13404
2. Custom text is not shown together with $0.00 price, only 'FREE' is shown:
View attachment 13405
3. Issues related to Philippines currency are connected with currency switcher you use and (possibly) any other settings on your website. Feel free to provide me with your WP-admin access details (or to a clone of your website as you have mentioned before) so we can check, investigate and solve this issue in our AliShipping add-on.
The same is about issues with $0.00 prices shown twice and custom text shown together with $0.00 -- as you can see, these issues do not reproduce from our side, but if you are able to provide us with WP-admin access to any website where this issue reproduces, we will also be able to investigate it properly.