Looks like you are using the Stripe component. Stripe says that it is configurable for language - so I think that is where you would need to make that change.
We cant modify the api call, and this is not a stripe plug in, its an Adalo plugin, that config should be in the component they are providing. I was expecting this would be modified with the browser language but its not happening or a place where I can set a text
I was just looking at the Stripe API and the “normal” call does not offer a language option. Looks like that is set in some other way. It does offer a currency toggle but the implementation of that in Adalo is static not dynamic. Sorry - I did not see a good answer for you