Hey. I have the exact same scenario. Every other time I have offered a ticket for resale, it appeared immediately. It usually resold within minutes or hours. This time it didn’t appear for several days, so I withdrew it and tried again. Same thing.
I called the club to try and find out what is going on and they said that they sometimes hold some back, so those who listed first will sell first. Withdrawing my ticket and re-listing it again put me to the back of the queue. I obviously also pointed out that I have agreed to resell my ticket through official channels, and will only be refunded if it sells, yet currently the ticket is not even being advertised.
I am guessing they have thousands of people wanting to return this particular match.