@addweb-solution-pvt-ltd
Thanks for your prompt reply.
The website url is https://www.mnswr.com but we have maintanance switched on as we’re preparing the website to go online this coming Thursday. So right now it’s only accessible for admins.
The theme used is DMCS: https://themeforest.net/item/the-dmcs-woocommerce-theme/12575784
But the issue occurs also with the Twenty Fourteen, Fifteen & Sixteen themes
Both WordPress and WooCommerce are running the latest versions 4.6.1 & 2.6.7
Perhaps relevant to mention is that until yesterday we ran the website on a staging server (at WP Engine) and deployed it to the live serverlast night and putt it in maintanace mode till coming Thursday to fine tune it. But this issue was already occuring on the staging server but we though that it had to to with the staging mode. Yet now it appears that it had nothing to do with that.