Why I Get Non-Html Email For Admin Notifications

Dear

while i get admin email notifications it is not HTML email

but customers are getting HTML emails as well.

anyone can help me about this issue?

Please provide us with the screenshot of admin email

here it is

https://pasteboard.co/JjfQGcU.png

I mean we dont see lines and tables for invoices in admin email

but customer email is ok

Styles are stored in the Header snippet. Try to temporary copy snippet content from the demo store.