A: I am really sorry that you have to go through this.

So sorry to see that you are facing this issue.
Please let me know some more details as to what error are you seeing.

I just tried adding a new list and added backlinks in the same and I was able to do so. https://www.loom.com/share/4ef5a5deb02445ef981ee4c76eb442d4

I have sent you an email, please respond with the screenshots or screen recording to enable me to help you better.

Thanks