Shopify Marketplace Connect

This app is not ready for prime-time ..seems like it's been rushed to release to cover for the fact that the Walmart-Shopify app is going away. The good news is that it is cheap (so far) and you can choose which listings to "enable". I'm just using it for Order management as I have zero faith it will work for listing or inventory management. Seems to me that they are just trying to do a copy/paste on what might have worked with Amazon. Documentation not updated for Walmart. Here are my other commments:
Can't handle marketplace cancellations ..won't backflush to marketplace cancelled order. Has no import/export capability - have to use their "grid" which doesn't allow you to sort or filter on anything meaningful. Can't easily map when you have hundreds of listings ..can't get rid of Amazon connector screen (I don't want to sync with Amazon - get rid of the pop-up screen that shows up every 10 seconds) I could go on ..but it is cheap so I'll take it for now BUT PLEASE MAKE SOME IMPROVEMENTS and I will be happy to raise my rating.

I tried to connect to our etsy store. That app is really hard to understand, I'd say impossible. Terrible interface. Random products were exported and I could not get to the bottom why these. Bulk editing does not work. Filtering products does not really work. All in all I had to delete the app cause it was making my life harder instead of easier.

I only used this app for a Walmart.com listing. I'm not sure how it performs for other marketplaces.

Here were my issues with Walmart:
1) The listing on Walmart was never the same as the product information on Shopify. I tried multiple times and ways to edit something as basic as the title showing up for the Walmart listing and even after chatting with support multiple times, I was unable to change the Walmart listing title or edit the description completely. The description was pretty much always a bit off
2) Marketplace Connect should see from my Shopify account that I'm shipping all my orders through Amazon MCF. It turns out that Walmart does not allow competitor carriers to be used so Marketplace Connect kept sending Walmart my shipping information and Walmart ignored it. Then they cancelled all my orders after all the products had already been delivered to customers and gave customers their money back. Marketplace Connect should have been able to warn me that the carrier I was using was not compatible with Walmart as Walmart has a list of carriers they can easily compare against.

This app seems to be abandonware at this point.

Nothing but issues with this platform. You change a setting and it doesnt work on ebay, fix it on ebay and the platform changes it back!! Terrible Customer service dont help much, just tell you to speak to ebay! Who say its an integration issue. Wasted two days trying to integrate this and would have been quicker doing it all manually!

Une usine à gaz ! Mon dieu que c'est mauvais, compliqué à utiliser et remplis de bug qui rendent la vie difficile !

I just spent an hour and a half setting up the first two products for all 5 Amazon marketplaces we have properly connected. After an hour and a half of work, I found that my work is not saving. Title, pricing, product category, tags.... this is desperate. The app is paid, so one would expect these basic functions to work reliably.
The app works as poorly as the previous app from Codisto, which I tried and uninstalled after 14 days. It's the one that only allows connection to one marketplace.

This extension doesn’t work inside Shopify app or admin from browser, for iPads or iPhones.

The interface of Codisto is integrated inside Shopify. While this might have advantages we found that it was difficult to work and navigate through the app.

Then, the app modifies the theme when installed. Even after uninstalling it some traces of software remain on the code so make sure to manually remove them.

I've used this on and off for years. Has been very buggy in the past and 'gotten us in trouble' with amazon because randomly stopped syncing. I see that they now are charging 1% of revenue of synced listings, on top of their app charges, which I find unbelievably greedy. This must be some kind of monopolistic advantage. Anyway, you can't just push your listings to Amazon and be done - AZ is super complex and the listings must be highly customized.
After 5-8 years we are going to find another app due to this greedy policy change.
I suspect they changed their name from Codisto in order to avoid their reputation of poor service in the past. For some reason this is Shopify's go to recommendation and I have no idea why.