Discover Credit Card Complaint

Discover Credit card department,

Arizona

I have discover credit card account. I access it from my desktop computer using Windows 10 Operating system and firefox as a browser. Every time when i try to login - this website think that I am not the right person and challenges with the security code. Either i need to get it on my cell phone or on my email. Even if i check the button " remember my computer '' it asks me again and again ... .very frustrating.I am not deleting my cookies. Already reached to Discover via secure message center but i do n't think they will be of any help. Last time they disabled my discover bank credentials also and i end up with lots of issues. Working with the online website of discover is really painful, frustrating and total waste of time. Their entire IT operations should be scrutinized. I am attaching the screen shots and the email communications. As you can thrice in a day ( today ) -I was challenged to login to my account and then it sent me code on my email. Also i checked the " remember my computer '' button also. I had been telling this to Discover for long time.