Stripe Secret Key is exposed in the front-end

Hello Team,

We have used the Fundpress plugin for donation system.

We have faced The issue for site key and secret key expose on front-end side.

We have already customize the plugins for donation functionality.so we will do not update the plugin.

also, we have see the old ticket for same issue but they have not satisfaction proper solution after the update plugin.

Please help us for this issue.

Thanks

The page I need help with: [log in to see the link]