QB Blames Discover and Discover Blames QB

I have been trying since Aug 19th of 2025 to re connect my Discover CC. I get an error 350 code and when I try to connect it tells me to try again later.

I have changed my password, cleared cache, incognito mode etc..

I talked to QB who said it was not their problem and told me to call Discover who then told me that nothing is wrong and and to call QB.

I give up