@Sanjay Jethva 

Hi 

I am now trying to make changes to a phtml in 

vendor/magento/module-newsletter/view/frontend/templates. I have made a new directory and placed the new phtml file to the app/design/frontend/Swissup/argento-pure2/Magento_Newsletter/templates. Does this sound correct? I'm unsure of my ThemeVendor and my ThemeName. When I check using template-hints, it still doesn't use the modified version. 

Thank you