Magento 2.2.5: Email Template Order Admin

I’m looking for explanation about email template in admin.

As you can see, this button will send an email to my gmail account.

enter image description here And as far as i know, magento use order_new.html to render html to email, but even when i changed it, the html is still the same, am i missing something here?

C:\xampp\htdocs\magento\vendor\magento\module-sales\view\frontend\email\order_new.html

<!-- /**  * Copyright © Magento, Inc. All rights reserved.  * See COPYING.txt for license details.  */ --> <!--@subject {{trans "Your %store_name order confirmation" store_name=$  store.getFrontendName()}} @--> <!--@vars { "var formattedBillingAddress|raw":"Billing Address", "var order.getEmailCustomerNote()":"Email Order Note", "var order.increment_id":"Order Id", "layout handle=\"sales_email_order_items\" order=$  order area=\"frontend\"":"Order Items Grid", "var payment_html|raw":"Payment Details", "var formattedShippingAddress|raw":"Shipping Address", "var order.getShippingDescription()":"Shipping Description", "var shipping_msg":"Shipping message" } @-->  {{template config_path="design/email/header_template"}}  <table>     <tr class="email-intro">         <td>             <p class="greeting">{{trans "%customer_name," customer_name=$  order.getCustomerName()}}</p>             <p>                 {{trans "Thank you for your order from %store_name." store_name=$  store.getFrontendName()}}                 {{trans "Once your package ships we will send you a tracking number."}}                 {{trans 'You can check the status of your order by <a href="%account_url">logging into your account</a>.' account_url=$  this.getUrl($  store,'customer/account/',[_nosid:1]) |raw}}             </p>             <p>                 {{trans 'If you have questions about your order, you can email us at <a href="mailto:%store_email">%store_email</a>' store_email=$  store_email |raw}}{{depend store_phone}} {{trans 'or call us at <a href="tel:%store_phone">%store_phone</a>' store_phone=$  store_phone |raw}}{{/depend}}.                 {{depend store_hours}}                     {{trans 'Our hours are <span class="no-link">%store_hours</span>.' store_hours=$  store_hours |raw}}                 {{/depend}}             </p>         </td>     </tr>     <tr class="email-summary">         <td>             <h1>{{trans 'Your Order <span class="no-link">#%increment_id</span>' increment_id=$  order.increment_id |raw}}</h1>             <p>{{trans 'Placed on <span class="no-link">%created_at</span>' created_at=$  order.getCreatedAtFormatted(2) |raw}}</p>         </td>     </tr>     <tr class="email-information">         <td>             {{depend order.getEmailCustomerNote()}}             <table class="message-info">                 <tr>                     <td>                         {{var order.getEmailCustomerNote()|escape|nl2br}}                     </td>                 </tr>             </table>             {{/depend}}             <table class="order-details">                 <tr>                     <td class="address-details">                         <h3>{{trans "Billing Info"}}</h3>                         <p>{{var formattedBillingAddress|raw}}</p>                     </td>                     {{depend order.getIsNotVirtual()}}                     <td class="address-details">                         <h3>{{trans "Shipping Info"}}</h3>                         <p>{{var formattedShippingAddress|raw}}</p>                     </td>                     {{/depend}}                 </tr>                 <tr>                     <td class="method-info">                         <h3>{{trans "Payment Method"}}</h3>                         {{var payment_html|raw}}                     </td>                     {{depend order.getIsNotVirtual()}}                     <td class="method-info">                         <h3>{{trans "Shipping Method"}}</h3>                         <p>{{var order.getShippingDescription()}}</p>                         {{if shipping_msg}}                         <p>{{var shipping_msg}}</p>                         {{/if}}                     </td>                     {{/depend}}                 </tr>             </table>             {{layout handle="sales_email_order_items" order=$  order area="frontend"}}         </td>     </tr> </table>  {{template config_path="design/email/footer_template"}} 

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Magento 2.2.5: Overriding Admin Controller sales/order

I need to override Admin sales/order/index controller, but still getting 404. Below the Steps I take to override –

Created My Custom Module
app/code/A2bizz/Order/registration.php

 <?php \Magento\Framework\Component\ComponentRegistrar::register(     \Magento\Framework\Component\ComponentRegistrar::MODULE,     'A2bizz_Order',     __DIR__ ); 

app/code/A2bizz/Order/etc/module.xml

 <?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">     <module name="A2bizz_Order" setup_version="2.0.0" schema_version="2.0.0">         <sequence>             <module name="Magento_Sales"/>             <module name="Magento_Rule"/>             <module name="Magento_Catalog"/>             <module name="Magento_Customer"/>             <module name="Magento_Payment"/>             <module name="Magento_SalesSequence"/>         </sequence>     </module> </config> 

app/code/A2bizz/Order/Controller/Adminhtml/Order/Index.php

 <?php      namespace A2bizz\Order\Controller\Adminhtml\Order;      class Index extends \Magento\Sales\Controller\Adminhtml\Order\Index     {         public function execute()         {             $  this->messageManager->addSuccess('Message from new admin controller.');             // Do your stuff here             return parent::execute();         }     } 

app/code/A2bizz/Order/etc/adminhtml/di.xml

 <?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">     <preference for="Magento\Sales\Controller\Adminhtml\Order\Index"                  type="A2bizz\Order\Controller\Adminhtml\Order\Index" /> </config> 

if anyone can help me on what I am doing wrong. Thanks

Magento 2.2.5 Tax is not working

Magento 2.2.5 version tax is not calculating, It always show 0(zero) in cart page and checkout page.

I have been lot of search but not luck, please anyone help to fix this issue.

or

How i can alter tax amount?

Note: Tax class already assigned to product, Tax rule already in admin so please except any other solution.

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