Shopify Marketplace Connect

As a long time user of Codisto I was quite happy with it, and it would have been a 5-star app.
Now, after becoming part of Shopify and rebranded Marketplace Connect, it went down to 1 star.

Functions that we used and need in Codisto have disappeared.
Why can I not work on variants in the bulk edit view?
Why would I have to go through single edit mode to make changes, especially when I need to do them in bulk to many of our listings at a time?

How is it not possible to at least match functionality?

I was hopeful that over time, some of the kinks that Codisto had would get solved after becoming part of the Shopify family, but I could not imagine losing core functions as a result.

Edit:
Support was able to revert me back to Codisto (the original app), which is great and enables me to be able to work again.

I was then asked to please delete my review, which I am willing to do as soon as the problems in the new app/design are gone. Until then, my rating stands that Shopify Marketplace is a sorry excuse in the state that it is now.

Edit 2:
Sadly, we are now forced into the new app.
Still not able to manage variants through bulk edit mode, after over a year.
At this point, all the app does for us is import orders and update inventory on Amazon, and is otherwise useless.
No way to filter for listings where only variants are active, but not the main listing (old Codisto had this)

If I have to manage Listings one by one, I can just do it on Seller Central and don't bother with this mess.