Tag Genie ‑ Edit & Automate

I tried this app to rename some of my product tags - I wanted to change some to start with capitals and other to be all lower case. I went through the process and renamed 17 tags to correct the case as I wanted, then discovered that some tags had been deleted dompletely and on other operations some products did have the tag renamed correctly but for others with the same tag, the tag had been removed from the product.
I'm now having to go through my products and try to find where the tag have been removed. And it doesn't help that the record of operations can tell you how many tags were altered but doesn't tell you the products - so there's no way of manually reversing the process. I was very dissapointed with this app and wish I hadn't used it at all.
I would recommend you use this app with extreame caution (or not at all) and carefully note exactly which products are going to be altered, then check on your products list that everything went as planned. Just to add; To be fair, I didn't bother contacting their support team as I was annoyed at what had happened - it's possible they would have fixed things and restored them for me. But I had already uninstalled the app at that point.