Looks like their main focus is to pull data from multiple bank accounts through AA mechanism and categorize them.
How is fold money different from other Account Aggregator platform?
You get categorisation and spends analysis feature on fold for multiple accounts.
Have not used it. Having said that, love the website UI
Can anybody confirm me whether you can see/click “check insight” tab from Money>bank balance>any bank ???
Ya, It’s working fine
Checked with all the three banks I linked, and as pointed out by @saurabh.s , its working fine. 
Since I was using this feature after the latest update, got extra instructions when first clicked on the insight button . 
So it has to be user specific issue.