I have a setup a multi website. https://domainname.com and https://demo.domainname.com
I need to share cart items between each website. So if i have added a cart items to A website and if i login to B website than it must be found there as well.
I have set Share Customer Account = Global
in Stores->Configuration->Customer Configuration->Account Sharing Options
Please help me to sort out this issue.
I am using Magento 2.2.6