Contact card issuer

I have been trying to add my card or any other card on my wallet but it’s not working it keeps showing me that “Card not added contact your card issuer for more information ” I have talked to my bank and my bank has said that they fixed it they did what they can but it’s still not working and I don’t know why because it used to work before and I had no issue but then it just stopped working can you please help me figure out what is wrong? How can I add my card I want to add it

thanks