Yes you can do it by follow up follow step.

• Create a blade file under your package

• In that blade file write the below code

@if(request()->is('checkout/onepage'))
eventBus.$on('after-checkout-payment-section-added', function() {
// write your javascript code here to show bank account on click of payment method.
});

you can get total price by using Cart::getCart()->base_grand_total and place this code in amount attribute of your payment gateway API.

You will get payment confirmation response from your payment gateway after that you can use below code to create invoice.

$order = $this->orderRepository->create(Cart::prepareDataForOrder());

    $this->order = $this->orderRepository->findOneWhere([
        'cart_id' => Cart::getCart()->id
    ]);

    $this->orderRepository->update(['status' => 'processing'], $this->order->id);

            if ($this->order->canInvoice()) {
        $this->invoiceRepository->create($this->prepareInvoiceData());
    }

    Cart::deActivateCart();

You have to click on ship from the backend process.

for more information regarding payment gateway integration visit - https://devdocs.bagisto.com/create_payment_method.html

you have to run below command

docker exec -i apache2 bash -c "su - www-data -s /bin/bash -c 'cd bagisto_installation_directory && npm i'"

docker exec -i apache2 bash -c "su - www-data -s /bin/bash -c 'cd bagisto_installation_directory && npm run watch'"

To resolve your issue just the follow the step
go to your shop->src->resources->js->app.js and following line import ja from 'vee-validate/dist/locale/ja'; just after line no 4

then replace your Vue.use function with the below one

Vue.use(VeeValidate, {
dictionary: {
ar: ar,
de: de,
ja: ja,
},
events: 'input|change|blur',
});

after that you have to run npm i and npm run watch in the shop package.

You can simply do that by overriding customer-info.blade.php which you can find under shop->resources->views->checkout->onepage.

If you are getting issue regarding your route then use this command php artisan route:cache && route:clear if you still getting issue after running the given command.Then deploy your bagisto on our staging server so that I can look into your code.

I didn't get you well, Do you want to see those attribute in the cart.Please check the screenshot.
click on the below link.
https://prnt.sc/rmcfyg

Yes, you can use your own css and js in bagisto store.Just follow the below steps

• Under your package create folder structure like this resources->view->assets.

• Under assets create two folder one as css put your css file under this folder and another as js put your all js file under this folder.

• Now publish those directory to your public folder.

• Now you have to add your js and css file path in your theme’s master layout.

Re: Editing Add Product Page

No i can't , but you can do it by yourself by overriding the products file create.blade.php and edit.blade.php which is present under webkul->admin->src->resources->view->products.