How can I modify an embedded subscribe popup in themes?

Store Design
1

I have an subscribe popup in themes, it looks like it is embedded in code. how do I make changes to it

2

you can edit it through going to inbox app in your store you will find it there, if not then share store url i will check it for you

3

https://admin.shopify.com/store/hayari-paris-au

4

I cannot find the inbox app. Sorry im new to this

5

you can add me as staff, i will help you with that, by following shopify community rules i cnt share my details here, you can find it from my signture. i will be waiting.