I was never able to get a C1 card approval. Wasted many hard pulls over the years. Pre-approval links never worked for me either.

I opened a 360 account two weeks ago in hopes of building a relationship with C1. I just tried the pre-approval link and I got approved for a few mid-tier Spark business cards. I am not quite ready so I didn't go through with the card application. But I have a good feeling for when I am ready.