Hey @Pan - just wanted to touch base with you here to let you know that I am working with Axel on this to troubleshoot what may be happening here. I’ll loop you into our original thread here once we have a solution: Can't add cart line item targeted extension in production
If you’re open to it, I’d be happy to open up a DM with you as well so that we can troubleshoot this to determine if it’s the same issue and if we can investigate further using your data - just ping me here and I can set one up on my end - thanks for your patience on this. 