Hi,

Please proceed to enter the site as the only developer within it. All 3rd party plugins and customised css coding has been removed and deactivated.

Please check Post and Page where image set to thumbnail size appears blown up and badly pixelated.
PAGE https://sacsons.com/12202-2/
POST https://sacsons.com/what-is-the-best-moisturiser/

In addition to the image issue. There is a coupon code issue. Please see attachment.Once user enters code into CART the code goes through. However if user enters the code into CHECKOUT page the code results in an error message. A new code has been made however the issue persists.
https://sacsons.com/checkout/

Thank you in advance