NotifyMe ‑ Warnings and Labels

Edit: The developers reached out to let me know that they have added the option to let you select certain variants within a product listing, rather than selecting only full products. I haven't re-downloaded the app to test this, but it seems like a great feature to have added.
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I'm sure this app is great for certain uses, but we were specifically looking for an app that would show a warning popup when certain variants were added to the cart. Unfortunately, you can only set it for full products rather than specific variants. For that reason, I feel like it's a little limited and doesn't meet our needs.